diff --git a/iso/airootfs/etc/skel/.config/autostart/archimedeos-wallpaper.desktop b/iso/airootfs/etc/skel/.config/autostart/archimedeos-wallpaper.desktop
new file mode 100644
index 0000000..fd7f774
--- /dev/null
+++ b/iso/airootfs/etc/skel/.config/autostart/archimedeos-wallpaper.desktop
@@ -0,0 +1,12 @@
+[Desktop Entry]
+Type=Application
+Name=ArchimedeOS Wallpaper Setup
+Name[fr]=Configuration fond d'écran ArchimedeOS
+Comment=Configure ArchimedeOS default wallpaper
+Comment[fr]=Configure le fond d'écran par défaut d'ArchimedeOS
+Exec=/usr/local/bin/archimedeos-setup-wallpaper
+Icon=preferences-desktop-wallpaper
+StartupNotify=false
+NoDisplay=true
+X-KDE-autostart-after=kded5
+OnlyShowIn=KDE;
diff --git a/iso/airootfs/etc/skel/.config/kdeglobals b/iso/airootfs/etc/skel/.config/kdeglobals
index fd15ca3..501dffe 100644
--- a/iso/airootfs/etc/skel/.config/kdeglobals
+++ b/iso/airootfs/etc/skel/.config/kdeglobals
@@ -1,3 +1,44 @@
 [General]
+BrowserApplication=firefox.desktop
 ColorScheme=Breeze
-Name=liveuser 
\ No newline at end of file
+Name=Breeze
+shadeSortColumn=true
+
+[Icons]
+Theme=breeze
+
+[KDE]
+LookAndFeelPackage=org.kde.breeze.desktop
+SingleClick=false
+widgetStyle=Breeze
+
+[KFileDialog Settings]
+Allow Expansion=false
+Automatically select filename extension=true
+Breadcrumb Navigation=true
+Decoration position=2
+LocationCombo Completionmode=5
+PathCombo Completionmode=5
+Show Bookmarks=false
+Show Full Path=false
+Show Inline Previews=true
+Show Preview=false
+Show Speedbar=true
+Show hidden files=false
+Sort by=Name
+Sort directories first=true
+Sort hidden files last=false
+Sort reversed=false
+Speedbar Width=138
+View Style=Detail
+
+[PreviewSettings]
+MaximumRemoteSize=0
+
+[WM]
+activeBackground=71,80,87
+activeBlend=255,255,255
+activeForeground=255,255,255
+inactiveBackground=239,240,241
+inactiveBlend=75,71,67
+inactiveForeground=189,195,199
\ No newline at end of file
diff --git a/iso/airootfs/etc/skel/.config/kwinrc b/iso/airootfs/etc/skel/.config/kwinrc
new file mode 100644
index 0000000..73afd0a
--- /dev/null
+++ b/iso/airootfs/etc/skel/.config/kwinrc
@@ -0,0 +1,36 @@
+[Desktops]
+Id_1=8b0b8c4b-4e61-4c04-a7f1-4d67e5f96e3c
+Name_1=Bureau 1
+Number=1
+Rows=1
+
+[Effect-kwin4_effect_translucency]
+Decorations=85
+Dialogs=85
+DropdownMenus=85
+Menus=85
+PopupMenus=85
+TornOffMenus=85
+
+[NightColor]
+Active=true
+LatitudeAuto=48.8566
+LongitudeAuto=2.3522
+
+[Plugins]
+kwin4_effect_translucencyEnabled=true
+slideEnabled=true
+
+[Tiling]
+padding=4
+
+[Tiling][213ef4a8-97cf-5452-903c-0bcc8e48b76d]
+tiles={"layoutDirection":"horizontal","tiles":[{"width":0.25},{"width":0.5},{"width":0.25}]}
+
+[Windows]
+DelayFocusInterval=300
+FocusPolicy=ClickToFocus
+FocusStealingPreventionLevel=1
+GeometryTip=false
+RollOverDesktops=true
+SeparateScreenFocus=false
diff --git a/iso/airootfs/etc/skel/.config/plasma-org.kde.plasma.desktop-appletsrc b/iso/airootfs/etc/skel/.config/plasma-org.kde.plasma.desktop-appletsrc
index f0098f5..f1daf6a 100644
--- a/iso/airootfs/etc/skel/.config/plasma-org.kde.plasma.desktop-appletsrc
+++ b/iso/airootfs/etc/skel/.config/plasma-org.kde.plasma.desktop-appletsrc
@@ -1,9 +1,81 @@
+[ActionPlugins][0]
+RightButton;NoModifier=org.kde.contextmenu
+
+[ActionPlugins][1]
+MidButton;NoModifier=org.kde.paste
+
 [Containments][1]
 activityId=
-formfactor=0
+formFactor=0
 immutability=1
 lastScreen=0
-plugin=org.kde.desktopcontainment
+location=0
+plugin=org.kde.plasma.folder
 wallpaperplugin=org.kde.image
+
+[Containments][1][ConfigDialog]
+DialogHeight=540
+DialogWidth=720
+
+[Containments][1][Configuration]
+PreloadWeight=0
+
+[Containments][1][General]
+ToolBoxButtonState=topcenter
+ToolBoxButtonX=537
+
 [Containments][1][Wallpaper][org.kde.image][General]
-Image=file://$HOME/.local/share/wallpapers/MonFondEcran/contents/images/archimedeoswallpaper.jpg
\ No newline at end of file
+Image=/usr/share/backgrounds/archimede/archimede-wallpaper.png
+PreviewImage=/usr/share/backgrounds/archimede/archimede-wallpaper.png
+SlidePaths=/usr/share/backgrounds/archimede/
+
+[Containments][2]
+activityId=
+formFactor=2
+immutability=1
+lastScreen=0
+location=3
+plugin=org.kde.panel
+wallpaperplugin=org.kde.image
+
+[Containments][2][Applets][3]
+immutability=1
+plugin=org.kde.plasma.kickoff
+
+[Containments][2][Applets][4]
+immutability=1
+plugin=org.kde.plasma.pager
+
+[Containments][2][Applets][5]
+immutability=1
+plugin=org.kde.plasma.icontasks
+
+[Containments][2][Applets][6]
+immutability=1
+plugin=org.kde.plasma.marginsseparator
+
+[Containments][2][Applets][7]
+immutability=1
+plugin=org.kde.plasma.systemtray
+
+[Containments][2][Applets][8]
+immutability=1
+plugin=org.kde.plasma.digitalclock
+
+[Containments][2][Applets][9]
+immutability=1
+plugin=org.kde.plasma.showdesktop
+
+[Containments][2][ConfigDialog]
+DialogHeight=84
+DialogWidth=1920
+
+[Containments][2][Configuration]
+PreloadWeight=26
+
+[Containments][2][General]
+AppletOrder=3;4;5;6;7;8;9
+
+[ScreenMapping]
+itemsOnDisabledScreens=
+screenMapping=
\ No newline at end of file
diff --git a/iso/airootfs/etc/skel/.config/plasmarc b/iso/airootfs/etc/skel/.config/plasmarc
new file mode 100644
index 0000000..f4d77f5
--- /dev/null
+++ b/iso/airootfs/etc/skel/.config/plasmarc
@@ -0,0 +1,14 @@
+[Wallpapers]
+usersWallpapers=/usr/share/backgrounds/archimede/archimede-wallpaper.png
+
+[Theme]
+name=default
+
+[PlasmaViews][Panel 2]
+floating=0
+
+[PlasmaViews][Panel 2][Defaults]
+thickness=44
+
+[Updates]
+performed=/usr/share/kservices5/,/usr/share/kservices5/ServiceMenus/,/usr/share/kservices5/kded/
diff --git a/iso/airootfs/etc/systemd/system/archimedeos-wallpaper.service b/iso/airootfs/etc/systemd/system/archimedeos-wallpaper.service
new file mode 100644
index 0000000..9085cc7
--- /dev/null
+++ b/iso/airootfs/etc/systemd/system/archimedeos-wallpaper.service
@@ -0,0 +1,15 @@
+[Unit]
+Description=ArchimedeOS Wallpaper Configuration
+After=display-manager.service
+Wants=display-manager.service
+
+[Service]
+Type=oneshot
+ExecStart=/usr/local/bin/archimedeos-setup-wallpaper
+RemainAfterExit=yes
+User=live
+Environment=HOME=/home/live
+Environment=DISPLAY=:0
+
+[Install]
+WantedBy=graphical.target
diff --git a/iso/airootfs/etc/systemd/system/graphical.target.wants/archimedeos-wallpaper.service b/iso/airootfs/etc/systemd/system/graphical.target.wants/archimedeos-wallpaper.service
new file mode 120000
index 0000000..1b06bed
--- /dev/null
+++ b/iso/airootfs/etc/systemd/system/graphical.target.wants/archimedeos-wallpaper.service
@@ -0,0 +1 @@
+../archimedeos-wallpaper.service
\ No newline at end of file
diff --git a/iso/airootfs/usr/local/bin/archimedeos-post-install-wallpaper b/iso/airootfs/usr/local/bin/archimedeos-post-install-wallpaper
new file mode 100755
index 0000000..0a20e1a
--- /dev/null
+++ b/iso/airootfs/usr/local/bin/archimedeos-post-install-wallpaper
@@ -0,0 +1,52 @@
+#!/bin/bash
+
+# Script de post-installation pour configurer le fond d'écran ArchimedeOS
+# Peut être appelé depuis l'installateur ou manuellement
+
+WALLPAPER_PATH="/usr/share/backgrounds/archimede/archimede-wallpaper.png"
+TARGET_USER="${1:-live}"
+TARGET_HOME="/home/$TARGET_USER"
+
+echo "Configuration du fond d'écran ArchimedeOS pour l'utilisateur: $TARGET_USER"
+
+# Créer les répertoires de configuration KDE s'ils n'existent pas
+mkdir -p "$TARGET_HOME/.config/autostart"
+mkdir -p "$TARGET_HOME/.local/share/plasma"
+
+# Copier les fichiers de configuration
+if [[ -f "/etc/skel/.config/plasma-org.kde.plasma.desktop-appletsrc" ]]; then
+    cp "/etc/skel/.config/plasma-org.kde.plasma.desktop-appletsrc" "$TARGET_HOME/.config/"
+fi
+
+if [[ -f "/etc/skel/.config/plasmarc" ]]; then
+    cp "/etc/skel/.config/plasmarc" "$TARGET_HOME/.config/"
+fi
+
+if [[ -f "/etc/skel/.config/kdeglobals" ]]; then
+    cp "/etc/skel/.config/kdeglobals" "$TARGET_HOME/.config/"
+fi
+
+if [[ -f "/etc/skel/.config/kwinrc" ]]; then
+    cp "/etc/skel/.config/kwinrc" "$TARGET_HOME/.config/"
+fi
+
+if [[ -f "/etc/skel/.config/autostart/archimedeos-wallpaper.desktop" ]]; then
+    cp "/etc/skel/.config/autostart/archimedeos-wallpaper.desktop" "$TARGET_HOME/.config/autostart/"
+fi
+
+# Ajuster les permissions
+chown -R "$TARGET_USER:$TARGET_USER" "$TARGET_HOME/.config"
+
+# Configurer le fond d'écran directement si possible
+if [[ -f "$WALLPAPER_PATH" ]]; then
+    # Utiliser kwriteconfig5 si disponible
+    if command -v kwriteconfig5 &> /dev/null; then
+        sudo -u "$TARGET_USER" kwriteconfig5 --file "$TARGET_HOME/.config/plasma-org.kde.plasma.desktop-appletsrc" --group "Containments" --group "1" --group "Wallpaper" --group "org.kde.image" --group "General" --key "Image" "file://$WALLPAPER_PATH"
+    fi
+    
+    echo "Fond d'écran configuré: $WALLPAPER_PATH"
+else
+    echo "Attention: Le fichier de fond d'écran $WALLPAPER_PATH n'existe pas"
+fi
+
+echo "Configuration terminée pour l'utilisateur $TARGET_USER"
diff --git a/iso/airootfs/usr/local/bin/archimedeos-setup-wallpaper b/iso/airootfs/usr/local/bin/archimedeos-setup-wallpaper
new file mode 100755
index 0000000..fd2b1b9
--- /dev/null
+++ b/iso/airootfs/usr/local/bin/archimedeos-setup-wallpaper
@@ -0,0 +1,49 @@
+#!/bin/bash
+
+# Script pour configurer automatiquement le fond d'écran ArchimedeOS
+# Ce script sera exécuté lors du premier démarrage
+
+WALLPAPER_PATH="/usr/share/backgrounds/archimede/archimede-wallpaper.png"
+USER_HOME="$HOME"
+
+# Attendre que KDE soit complètement chargé
+sleep 5
+
+# Vérifier si le fichier de fond d'écran existe
+if [[ ! -f "$WALLPAPER_PATH" ]]; then
+    echo "Erreur: Le fond d'écran $WALLPAPER_PATH n'existe pas"
+    exit 1
+fi
+
+# Configurer le fond d'écran via DBus (méthode la plus fiable)
+if command -v qdbus &> /dev/null; then
+    # Essayer avec qdbus (Qt5)
+    qdbus org.kde.plasmashell /PlasmaShell org.kde.PlasmaShell.evaluateScript "
+        var allDesktops = desktops();
+        for (i=0;i<allDesktops.length;i++) {
+            d = allDesktops[i];
+            d.wallpaperPlugin = 'org.kde.image';
+            d.currentConfigGroup = Array('Wallpaper', 'org.kde.image', 'General');
+            d.writeConfig('Image', 'file://$WALLPAPER_PATH');
+        }
+    " 2>/dev/null
+elif command -v qdbus-qt5 &> /dev/null; then
+    # Essayer avec qdbus-qt5
+    qdbus-qt5 org.kde.plasmashell /PlasmaShell org.kde.PlasmaShell.evaluateScript "
+        var allDesktops = desktops();
+        for (i=0;i<allDesktops.length;i++) {
+            d = allDesktops[i];
+            d.wallpaperPlugin = 'org.kde.image';
+            d.currentConfigGroup = Array('Wallpaper', 'org.kde.image', 'General');
+            d.writeConfig('Image', 'file://$WALLPAPER_PATH');
+        }
+    " 2>/dev/null
+fi
+
+# Alternative: utiliser kwriteconfig5 pour une configuration persistante
+if command -v kwriteconfig5 &> /dev/null; then
+    kwriteconfig5 --file plasma-org.kde.plasma.desktop-appletsrc --group "Containments" --group "1" --group "Wallpaper" --group "org.kde.image" --group "General" --key "Image" "file://$WALLPAPER_PATH"
+    kwriteconfig5 --file plasma-org.kde.plasma.desktop-appletsrc --group "Containments" --group "1" --group "Wallpaper" --group "org.kde.image" --group "General" --key "PreviewImage" "file://$WALLPAPER_PATH"
+fi
+
+echo "Fond d'écran ArchimedeOS configuré: $WALLPAPER_PATH"
diff --git a/iso/profiledef.sh b/iso/profiledef.sh
index 8cfa845..1c6e090 100644
--- a/iso/profiledef.sh
+++ b/iso/profiledef.sh
@@ -24,4 +24,6 @@ file_permissions=(
   ["/root/.gnupg"]="0:0:700"
   ["/etc/sudoers.d"]="0:0:750"
   ["/etc/sudoers.d/g_wheel"]="0:0:440"
+  ["/usr/local/bin/archimedeos-setup-wallpaper"]="0:0:755"
+  ["/usr/local/bin/archimedeos-post-install-wallpaper"]="0:0:755"
 )