Kills off irritating group policy settings your domain may impose on you.

group-policy.reg

Windows Registry Editor Version 5.00

[HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Policies\System]
; Sets the wallpaper to the default
"Wallpaper"=-
; Allows you to change wallpaper style (center, stretch etc.)
"WallpaperStyle"=-
; Allows you to change the visual style
"SetVisualStyle"=-
; Disables that profile quota message
"EnableProfileQuota"=dword:00000000

[HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Policies\Explorer]
; Allows you to change themes
"NoThemesTab"=dword:00000000
; Enables the hiding of tray items
"NoAutoTrayNotify"=dword:00000000

; Allows you to change the wallpaper
[HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Policies\ActiveDesktop]
"NoChangingWallpaper"=dword:00000000

[HKEY_CURRENT_USER\Software\Policies\Microsoft\Windows\Control Panel\Desktop]
; Allows you to change the screen saver
"ScreenSaveActive"=-
"SCRNSAVE.EXE"=-