--- a/QTfrontend/ui/page/pagemain.cpp	Sat Dec 03 14:36:36 2011 +0100
+++ b/QTfrontend/ui/page/pagemain.cpp	Sat Dec 03 14:43:09 2011 +0100
@@ -42,19 +42,25 @@
     pageLayout->setRowStretch(4, 1);
 
     BtnSinglePlayer = addButton(":/res/LocalPlay.png", pageLayout, 2, 0, 1, 2, true);
-    BtnSinglePlayer->setToolTip(tr("Local Game (Play a game on a single computer)"));
+    BtnSinglePlayer->setToolTip(tr("Local Game"));
+    BtnSinglePlayer->setWhatsThis(tr("Play a game on a single computer"));
     pageLayout->setAlignment(BtnSinglePlayer, Qt::AlignHCenter);
 
     BtnNet = addButton(":/res/NetworkPlay.png", pageLayout, 2, 2, 1, 2, true);
-    BtnNet->setToolTip(tr("Network Game (Play a game across a network)"));
+    BtnNet->setToolTip(tr("Network Game"));
+    BtnNet->setWhatsThis(tr("Play a game across a network"));
     pageLayout->setAlignment(BtnNet, Qt::AlignHCenter);
 
     // button order matters for overlapping (what's on top and what isn't)
     BtnInfo = addButton(":/res/HedgewarsTitle.png", pageLayout, 0, 0, 1, 4, true);
     BtnInfo->setStyleSheet("border: transparent;background: transparent;");
+    //BtnInfo->setToolTip(tr("Credits")); //tooltip looks horrible with transparent background buttons
+    BtnInfo->setWhatsThis(tr("Read about who is behind the Hedgewars Project"));
     pageLayout->setAlignment(BtnInfo, Qt::AlignHCenter);
 
     BtnDataDownload = addButton(tr("Downloadable Content"), pageLayout, 4, 0, 1, 4, false);
+    //BtnDataDownload->setToolTip(tr(Downloadable Content"));
+    BtnDataDownload->setWhatsThis(tr("Access the user created content downloadable from our website"));
     pageLayout->setAlignment(BtnDataDownload, Qt::AlignHCenter);
 
     return pageLayout;
@@ -91,13 +97,11 @@
 
     if(!isDevBuild)
     {
-        //mainNote->setText(QLabel::tr("Tip: ") + randomTip());
         setDefautDescription(QLabel::tr("Tip: ") + randomTip());
     }
     else
     {
         setDefautDescription(QLabel::tr("This development build is 'work in progress' and may not be compatible with other versions of the game. Some features might be broken or incomplete. Use at your own risk!"));
-        //mainNote->setText(QLabel::tr("This development build is 'work in progress' and may not be compatible with other versions of the game. Some features might be broken or incomplete. Use at your own risk!"));
     }
 
 }

--- a/project_files/hedgewars.pro	Sat Dec 03 14:36:36 2011 +0100
+++ b/project_files/hedgewars.pro	Sat Dec 03 14:43:09 2011 +0100
@@ -96,7 +96,6 @@
 	../QTfrontend/KB.h \
     ../QTfrontend/hwconsts.h \
     ../QTfrontend/sdlkeys.h \
-    ../QTfrontend/mouseoverfilter.h \
     ../QTfrontend/ui/mouseoverfilter.h
 
 SOURCES += ../QTfrontend/model/ammoSchemeModel.cpp \