There used to be some in ThemeXP(themexp.org). I got lots of wallpapers from there when it was free... I've got a 100MB folder of them .
Now they want money or else you'll download a spyware together with what you intended...
I think there's a program you need to install to enable different themes.
Benny
When in doubt, delete history and freeze transformations.
My latest snake game
(Requires DirectX9 SDK and Framework)