Looks like u already found the answer!!!!
How to disable Display Properties Tabs for security purpose?
1) Run registery editor, for this, type regedit in Run dialog box from start menu.
2) Find following address: HKEY-CURRENT-USER \ Software \ Microsoft \ Windows \ CurrentVersion \ Policies \ System
3)Create a new DWORD (value of 1) and :
3-1) to disable ScreenSaver tab name it NoDispScrSavPage
3-2) to disable Desktop tab name it NoDispBackgroundPage
3-3) to disable Themes tab name it NoThemesTab
3-4) to disable Setting tab name it NoDispSettingsPage
3-5) to dsable Appearance and Themes tabs name it NoDispAppearance
3-6) to disable Display Properties name it NoDispCpl
or Alternatively do this
1) In run type GPEDIT.MSC
2) search for desktop tab or folder... It will most probably will be in administrative templates and inside control panel. If u dont find it, then right click on administrative tools and select add/remove templates.
Click add and select system.adm and click open and click on close button. U will find few more options added. now u will find it... u can enable screensaver tab in that options
To enable set the value as 0 instead of 1. but he sure that u dont have virus like "antivirus 2008" u may also check
Edited by Philip Kingsley, 26 August 2008 - 07:38 PM.