To restrict the use of system features, edit: (the System sub-key must be added)
HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Policies\System
All of the following entries are type REG_DWORD and have a default of 0. If these entries are set to 1, the restriction is enabled.
DisableTaskMgr - Prevents TaskMgr.exe from running. This entry is only supported from NT 4.0 with SP2 or greater.
NoDispAppearancePage - Removes the ability to change the colors or color scheme on the desktop from Control Panel.
NoDispBackgroundPage - Removes the ability to change wallpaper and backround pattern from Control Panel.
NoDispCPL - Disables the Display option in Control Panel
NoDispScrSavPage - The Screen Saver tab does not appear in the Display Properties page of Control Panel.
NoDispSettingsPage - The Settings and Plus tab do not appear in the Display Properties page of Control Panel.
See Tip 050 for more.