diff --git a/YACOSWeb/WebContent/WEB-INF/classes/config.properties b/YACOSWeb/WebContent/WEB-INF/classes/config.properties
index 103935b..8db4f3c 100644
--- a/YACOSWeb/WebContent/WEB-INF/classes/config.properties
+++ b/YACOSWeb/WebContent/WEB-INF/classes/config.properties
@@ -1,3 +1,7 @@
 download.dir.path=../server/default/data/uploadedFiles/
 mailService.fromEmailAddress=system@yacos.dreamhosters.com
-mailService.replyToEmailAddress=no-reply@yacos.dreamhosters.com
\ No newline at end of file
+mailService.replyToEmailAddress=no-reply@yacos.dreamhosters.com
+mailService.host=smtp.univ-lille1.fr
+mailService.username=
+mailService.password=
+mailService.port=25
\ No newline at end of file
diff --git a/YACOSWeb/WebContent/WEB-INF/classes/messages.properties b/YACOSWeb/WebContent/WEB-INF/classes/messages.properties
index 48013b0..cfd1e1a 100644
--- a/YACOSWeb/WebContent/WEB-INF/classes/messages.properties
+++ b/YACOSWeb/WebContent/WEB-INF/classes/messages.properties
@@ -17,12 +17,13 @@ home.author.txt=Simple ! With Yacos you can take a look on all open conferences
 home.referee=I am a program committee member. How Yacos can help me ?
 home.referee.txt=If you are the chairman, a PC member or simply a referee, thanks to yacos you can follow articles posted by authors.<br />As chairman, you can dispatch articles to your members for review and rating, manage your conference, the deadlines...<br />As the PC member or referee, you can review an article, post your comments and rate it, express your preference toward the submitted articles,...
 home.youknow=So now you know...
-home.link.choose=Choose one conference
+home.link.choose=Browse the conferences
+home.link.register=Create an account
 home.link.userBoard=Go to your dashboard
 
 connected.noconference.title=No conference selected
 connected.noconference.warning=You must choose a conference to access all your features :
-connected.noconference.warning=Or you can see a recap of your current involvement in the conferences available in the system :
+connected.noconference.warning.userBoard=Or you can see a recap of your current involvement in the conferences available in the system :
 article.post.noconference=You must choose a conference before post or edit an article. 
 
 conference.detail.description=Description
@@ -67,6 +68,9 @@ menu.general.title=Main
 menu.general.userBoard=User Board
 menu.general.confInfo=Conference's informations
 
+menu.admin.title=Administrator
+menu.admin.manageUsers=Manage users
+
 menu.chairman.title=Chairman
 menu.chairman.conference.create=Create new conference
 menu.chairman.conference.modify=Modify this conference
@@ -129,8 +133,8 @@ form.label.linkPage=opening session page
 form.field.account=Your account
 form.field.personal=Personal details
 form.field.necessary=* Required informations
-message.account.validate=Account created successfully. You can now connect at this.
-message.account.maj=Your account was indeed updated.
+message.account.validate=Account created successfully. You can now use the system.
+message.account.maj=Your account was successfully updated.
 form.edit.title=Edit your account
 form.edit.txt=Access and edit all your personal informations.
 
@@ -250,10 +254,10 @@ conference.error.noTokenLeft=You have no conference creation token left !\nPleas
 
 
 evaluation.title=You are evaluating
-evaluation.commentPCMember=Comment of PC Member
-evaluation.commentAuthor=Comment of author
+evaluation.commentPCMember=Comment for PC Member
+evaluation.commentAuthor=Comment for author
 evaluation.headPage=Report of the evaluation
-evaluation.titleArticle=The title of article is  
+evaluation.titleArticle=The title of this article is  
 evaluation.note=The note for the criterion
 evaluation.thisArticle=evaluate this article
 evaluation.choose=Choose an article to evaluate
@@ -265,7 +269,7 @@ invitation.send=Send an invitation
 ConflictList.list1=Members of the conference
 ConflictList.list2=ConflictList of the article
 ConflictList.choose=manage the conflict list of the conference's articles 
-ConflictList.help=Click to an article to edit the conclict list
+ConflictList.help=Click to an article to edit the conflict list
 
 #DispatchMembers
 members.list1=Members of the conference
@@ -277,7 +281,7 @@ disptachArticle.help=Click to an article to dispatch the members
 #DelegateArticles
 delegateArticles.choose=delegate the articles between to the referees
 delegateArticles.list1= referees of the conference
-delegateArticles.list2= referees aassociate to the article
+delegateArticles.list2= referees associated to this article
 delegateArticles.help=Click to an article to delegate it to the referees
 
 #valider les articles 
diff --git a/YACOSWeb/WebContent/WEB-INF/decorators/usermenu.jsp b/YACOSWeb/WebContent/WEB-INF/decorators/usermenu.jsp
index 2e7e55f..20392a3 100644
--- a/YACOSWeb/WebContent/WEB-INF/decorators/usermenu.jsp
+++ b/YACOSWeb/WebContent/WEB-INF/decorators/usermenu.jsp
@@ -8,11 +8,6 @@
 
 <div id="mainmenu">
 	
-	<!-- On affiche les menus seulement si une conference est deja active -->
-	
-	<c:if test="${currentConferenceId != null}">
-	
-	
 	<!--  MENU : ROLE_USER for general option -->
 	<authz:authorize ifAllGranted="ROLE_USER">
 		<div class="mainmenubloc">
@@ -27,6 +22,17 @@
 	</authz:authorize>
 	
 	
+	<!-- MENU : ROLE_ADMIN -->
+	<authz:authorize ifAllGranted="ROLE_ADMIN">
+		<div class="mainmenubloc">
+			<h4><fmt:message key="menu.admin.title" /></h4>
+				<ul>
+					<li><a href="<c:url value="admin.htm"/>"><fmt:message key="menu.admin.manageUsers" /></a></li>
+				</ul>
+				<div class="footer"></div>
+		</div>
+	</authz:authorize>
+	
 	<!-- MENU : CHAIRMAN -->
 	<authz:authorize ifAnyGranted="ROLE_CHAIRMAN,ROLE_CONFERENCE_CREATOR">
 		<div class="mainmenubloc">
@@ -35,12 +41,14 @@
 					<authz:authorize ifAllGranted="ROLE_CONFERENCE_CREATOR">
 					<li><a href="<c:url value="addConference.htm"/>"><fmt:message key="menu.chairman.conference.create" /></a></li>
 					</authz:authorize>
+					<authz:authorize ifAllGranted="ROLE_CHAIRMAN">
 					<li><a href="<c:url value="addConference.htm?action=modify"/>"><fmt:message key="menu.chairman.conference.modify" /></a></li>
 					<li><a href="<c:url value="listArticle.htm"/>"><fmt:message key="menu.chairman.article.list" /></a></li>
 					<li><a href="<c:url value="dispatchArticle.htm"/>"><fmt:message key="menu.chairman.article.dispatch" /></a></li>
 					<li><a href="<c:url value="validateArticle.htm"/>"><fmt:message key="menu.chairman.article.validate" /></a></li>
 					<li><a href="<c:url value="conflictList.htm"/>"><fmt:message key="menu.chairman.article.conflict" /></a></li>
 					<li><a href="<c:url value="forum.htm?role=chairman"/>"><fmt:message key="menu.chairman.article.discussion" /></a></li>
+					</authz:authorize>
 				</ul>
 				<div class="footer"></div>
 		</div>
@@ -96,9 +104,6 @@
 		</div>
 	</authz:authorize>
 	
-	</c:if>
-	
-	
 </div><!--mainmenu-->
 
 </body>
diff --git a/YACOSWeb/WebContent/WEB-INF/jsp/listConference.jsp b/YACOSWeb/WebContent/WEB-INF/jsp/listConference.jsp
index 8ea9139..a15049e 100644
--- a/YACOSWeb/WebContent/WEB-INF/jsp/listConference.jsp
+++ b/YACOSWeb/WebContent/WEB-INF/jsp/listConference.jsp
@@ -57,7 +57,7 @@
 <h4 class="title">Conference's list</h4>
 
 	<c:if test="${ac != null}">
-		<p class="formHelp">
+		<p class="formOk">
 		<c:choose>
 			<c:when test="${ac == 2}"><fmt:message key="message.account.validate" /></c:when>
 			<c:when test="${ac == 1}"><fmt:message key="message.account.maj" /></c:when>
diff --git a/YACOSWeb/WebContent/WEB-INF/jsp/main.jsp b/YACOSWeb/WebContent/WEB-INF/jsp/main.jsp
index db00b2b..0d36bdc 100644
--- a/YACOSWeb/WebContent/WEB-INF/jsp/main.jsp
+++ b/YACOSWeb/WebContent/WEB-INF/jsp/main.jsp
@@ -106,7 +106,13 @@
     	<h3 class="subtitle"><fmt:message key="home.referee" /></h3>
     	<p><fmt:message key="home.referee.txt" /></p>
 
-		<h3 class="subtitle"><fmt:message key="home.youknow" />&nbsp;<a href="<c:url value="listConference.htm"/>" class="register_link"><fmt:message key="home.link.choose" /> !</a></h3>
+		<h3 class="subtitle"><fmt:message key="home.youknow" />&nbsp;</h3>
+		<p>
+			<a href="<c:url value="listConference.htm"/>" class="register_link"><fmt:message key="home.link.choose" /></a>
+		</p>
+		<p>
+			<a href="<c:url value="registerUser.htm"/>" class="register_link"><fmt:message key="home.link.register" /></a>
+		</p>
     	</authz:authorize>
 	</c:otherwise>
 	
diff --git a/YACOSWeb/WebContent/WEB-INF/yacos-servlet.xml b/YACOSWeb/WebContent/WEB-INF/yacos-servlet.xml
index 6b8af51..67af772 100644
--- a/YACOSWeb/WebContent/WEB-INF/yacos-servlet.xml
+++ b/YACOSWeb/WebContent/WEB-INF/yacos-servlet.xml
@@ -233,7 +233,8 @@
 		<property name="userManager" ref="userManager" />
 		<property name="evaluationManager" ref="evaluationManager" />
 		<property name="validator" ref="ConferenceValidator" />
-	</bean>
+	</bean>
+	
 	<bean id="ReportConfCreateController"
 		class="org.yacos.web.chairman.controller.ReportConfCreateController">
 		<property name="conferenceManager" ref="conferenceManager" />
@@ -376,7 +377,10 @@
 	</bean>
 	
 	<bean id="mailSender" class="org.springframework.mail.javamail.JavaMailSenderImpl">
-		<property name="host" value="smtp.univ-lille1.fr"/>
+		<property name="host" value="${mailService.host}"/>
+		<property name="username" value="${mailService.username}"/>
+		<property name="password" value="${mailService.password}"/>
+		<property name="port" value="${mailService.port}"/>
 	</bean>
 
 	<bean id="mailSenderService"
diff --git a/YACOSWeb/src/org/yacos/web/PCmember/controller/ValidateOrRejectController.java b/YACOSWeb/src/org/yacos/web/PCmember/controller/ValidateOrRejectController.java
index 38d6d73..6875df9 100644
--- a/YACOSWeb/src/org/yacos/web/PCmember/controller/ValidateOrRejectController.java
+++ b/YACOSWeb/src/org/yacos/web/PCmember/controller/ValidateOrRejectController.java
@@ -15,6 +15,11 @@ import org.springframework.web.servlet.view.RedirectView;
 import org.yacos.core.article.Article;
 import org.yacos.core.article.IArticleManager;
 import org.yacos.core.article.Article.State;
+import org.yacos.core.conferences.Conference;
+import org.yacos.core.users.User;
+import org.yacos.web.system.controller.MailSenderService;
+import org.yacos.web.system.session.SessionService;
+import org.yacos.web.system.session.YACOSUtils;
 
 public class ValidateOrRejectController extends SimpleFormController {
 
@@ -37,12 +42,33 @@ public class ValidateOrRejectController extends SimpleFormController {
 				throw new ModelAndViewDefiningException(new ModelAndView("404error"));
 			
 			String value = request.getParameter("value");
-			
+
+			Conference conf = SessionService.getInstance().getCurrentConference();
+			String userLogin = a.getMainAuthor().getLogin();
+			User author = SessionService.getInstance().getUserManager().getUser(userLogin);
 			if (value.equals("valide"))	{
 				a.setState(State.ACCEPTED);
+				// Sending email
+				String mailSubject = "YACOS : Your article has been accepted";
+				String mailBody = "Your article entitled "+a.getTitle();
+				mailBody += " has been accepted by the program committee.\n";
+				mailBody += "It's content will be featured on the program of the upcoming conference :\n";
+				mailBody += conf.getTitle()+"\n";
+				mailBody += "Please mark on your calendar the dates for this conference :";
+				mailBody += "Starts on "+conf.getDateStart()+" and ends on "+conf.getDateEnd()+"\n";
+				mailBody += "Thank you for your participation.\n";
+				MailSenderService.getInstance().sendEMail(author.getEmail(), mailSubject, mailBody);
 			}
 			else if (value.equals("reject")) {
 				a.setState(State.REJECTED);
+				// Sending email
+				String mailSubject = "YACOS : Your submission has been declined";
+				String mailBody = "Your article entitled "+a.getTitle();
+				mailBody += " has not been accepted by the program committee.\n";
+				mailBody += "You can view the comments leaved by the evaluators on your personnal space :\n";
+				mailBody += YACOSUtils.fullURL("userBoard.htm")+"\n";
+				mailBody += "Thank you for your participation.\n";
+				MailSenderService.getInstance().sendEMail(author.getEmail(), mailSubject, mailBody);
 			}
 			else
 				throw new ModelAndViewDefiningException(new ModelAndView("404error"));
diff --git a/YACOSWeb/src/org/yacos/web/author/controller/SArticleController.java b/YACOSWeb/src/org/yacos/web/author/controller/SArticleController.java
index 3c1e4e8..3b53788 100644
--- a/YACOSWeb/src/org/yacos/web/author/controller/SArticleController.java
+++ b/YACOSWeb/src/org/yacos/web/author/controller/SArticleController.java
@@ -57,13 +57,16 @@ public class SArticleController extends SimpleFormController {
 		}
 
 		String action = request.getParameter("action");
+		
+		// We're creating a new article, in opposition of modifying one
 		if (action == null || action.equals(""))
 		{
-
+			// Try to save the file
 			String nomFile="";
 
 			try {
 				MultipartFile file = ((FormSubmission) command).getFile();
+				// No file
 				if (file == null || file.isEmpty()) {
 					errors.rejectValue("file", "form.submitArticle.noFile");
 					try {
@@ -73,7 +76,7 @@ public class SArticleController extends SimpleFormController {
 					}
 				}					
 				else {
-
+					// Checking the extension
 					String extension = file.getOriginalFilename().substring(file.getOriginalFilename().length() - 4).toLowerCase();
 					logger.info("The file extension is: " + extension);
 
@@ -123,11 +126,12 @@ public class SArticleController extends SimpleFormController {
 						}
 					}
 
-					// Creates the article
+					// Actually creates the article
 					Article newArticle = articleManager.addArticle(
 							title, theme, abstractText, nomFile, user.getLogin(),
 							listSecondaryAuthor, Article.State.SUBMITED, conf.getId());
-
+					
+					// We had a persistence error, stop and return
 					if(newArticle==null){
 						errors.reject("article.errors.didNotSave");
 						try {
@@ -138,17 +142,21 @@ public class SArticleController extends SimpleFormController {
 					}
 
 					byte b[] = file.getBytes();
-
+					
+					// Create the file name
 					String path = "conference"+conf.getId()+"/";
+					// Ensure we have the correct file hierarchy
 					(new File(downloadDirPath+path)).mkdirs();
+					// Complete the path so it is valid, relative to the JBoss working dir
 					path += newArticle.getId()+"_"+file.getOriginalFilename();
+					// Create the actual output file
 					File uploadedFile = new File(downloadDirPath+path);
-
+					// Write the data
 					FileOutputStream fos = new FileOutputStream(uploadedFile);
-
 					fos.write(b);
 					fos.close();
-
+					
+					// Save the file URL in the database, now it's saved
 					newArticle.setURL_article(path);
 					articleManager.updateArticle(newArticle);
 				}
@@ -163,20 +171,28 @@ public class SArticleController extends SimpleFormController {
 			// The role author might have been added, refresh the credentials
 			SessionService.getInstance().refreshAuthentication();
 		}
+		// Case of a modification of an existing article
 		else if (action.equals("modify")) {
 			String articleID = request.getParameter("articleID");
 
 			try {
 				Integer id = new Integer(articleID);
 
-				// TODO : vérifier que l'id de l'article appartient ŕ l'auteur... vive les GET...
-
 				Article old = articleManager.getArticle(id);
+				// In case of an error, we want the secondary authors to be filled on the page
+				request.setAttribute("listSecondaryAuthors", old.getSecondaryAuthors());
 				old.setTitle(title);
 				old.setTopic(theme);
 				old.setSecondaryAuthors(listSecondaryAuthor);
 				old.setAbstractText(abstractText);
 
+				// Check that the user owns this article
+				String login = SessionService.getInstance().getCurrentUserLogin();
+				if(! old.getMainAuthor().getLogin().equals(login)){
+					// Throw a denied page
+					throw new ModelAndViewDefiningException(new ModelAndView("denied"));
+				}
+
 				MultipartFile file = ((FormSubmission) command).getFile();
 				if (file == null || file.isEmpty()) {
 					articleManager.updateArticle(old);
@@ -269,6 +285,11 @@ public class SArticleController extends SimpleFormController {
 		
 		// date verification 
 		Conference conf = SessionService.getInstance().getCurrentConference();
+		
+		if(conf == null){
+			throw new ModelAndViewDefiningException(new ModelAndView("main"));
+		}
+		
 		if(conf.getDateArticle().before(new Date())){
 			throw new ModelAndViewDefiningException(new ModelAndView("main","end","submission"));
 		}
@@ -286,22 +307,25 @@ public class SArticleController extends SimpleFormController {
 			try {
 				Integer id = new Integer(articleID);
 
-				// TODO : vérifier que l'id de l'article appartient ŕ l'auteur... vive les GET...
-
 				Article a = articleManager.getArticle(id);
 
 				if (a == null)
 					throw new ModelAndViewDefiningException(new ModelAndView("denied", "message", getMessageSourceAccessor().getMessage("submission.modify.denied")));
-
+				// Check that the user owns this article
+				String login = SessionService.getInstance().getCurrentUserLogin();
+				if(! a.getMainAuthor().getLogin().equals(login)){
+					throw new ModelAndViewDefiningException(new ModelAndView("denied"));
+				}
+				
 				FormSubmission myArticle = new FormSubmission();				
 
 				myArticle.setAbstractText(a.getAbstractText());
 				myArticle.setTitle(a.getTitle());
 				//myArticle.setListe(a.getSecondaryAuthors());
 				myArticle.setTheme(a.getTopic());
-
-				request.getSession().setAttribute("listSecondaryAuthors", a.getSecondaryAuthors());
-
+				
+				request.setAttribute("listSecondaryAuthors", a.getSecondaryAuthors());
+				
 				return myArticle;
 
 			}