Deleted Background Options. Please Help!

[JasonP27]

I have Windows XP Professional (No Service Packs). I ran Spybot S&D and found some registry entries to be removed, one called "Desktop.Explorer" and the other "Desktop.ActiveDesktop."

When I removed them I lost the ability to change the background on my desktop, along with the entire "Desktop" tab in the desktop Properties window.

I tried to recover them within Spybot, (the entries were in the recovery list,) but doing so did not (completely) fix or restore the computer's "Desktop" tab in the "Properties" window. (The tab came back, but everything is grayed out.)

It may be possible that the entries were (partially) restored, because I have the Desktop tab back now, but I cannot change any of the settings in the Desktop tab. Also the Active Desktop tab is missing when I click the "Customize My Desktop" button.

I recently saw a post about Desktop.Explorer being a false positive, but there is no solution to fix any problems caused by removing them.

I tried System Restore, nothing. I even tried an in-place upgrade of Windows XP Professional, which didn't help either. It's as if the permission or right to change the background of the desktop has been denied by Windows itself, so I looked under the Local Security Policy etc. but did not find any options for display properties and the rights to change them.

I've attached a picture of the Display Properties box with the problems clearly marked so there is no confusion.

PLEASE HELP!