2 Amazing Wall Paper Sites!
I download all my wallpapers from here, or I just make my own =)
Wall Paper Abyss (good for abstact designs)
http://wall.alphacoders.com/
Interfacelift (Large selection and wide range of resolutions)
http://interfacelift.com/wallpaper_be...
Have fun!
Check out my website and register on the forums!
http://www.techtopia.co.nr/