Vista Problem: Can't Set Backgrounds and Customized Themes

I can't see your screen shots while at work. But if you think the viruses corrupted something then you can try this:

http://www.howtogeek.com/howto/windows-v...tem-files/


EDIT: OKAY, looks like you're running the Windows Classic Theme.

You need to change the theme back to Windows Vista Aero;

right click on your desktop > personalise > Click "Window Color and Appearance" > select windows Aero