Search for desktop wallpaper

You know, having this huge computer screen is pretty cool, except for one thing. It's practically impossible to find a cute anime/manga wallpaper that fits a 1920 x 1200 resolution. :( I mean, the default wallpapers on the computer are fine, but the computer feels a little...impersonal without an anime/manga background, you know?

I suppose I could lower the resolution -- it goes down to 800 x 600 -- but lower resolutions don't look very good on this screen.

And I would try my hand at making a wallpaper to fit, but the only graphics program that came with this computer is Paint. You can't make a nice wallpaper with Paint. *sigh* Ironic that now that I have a DVD drive and can make my own screenshots, I don't have a decent graphics program to do anything with those screenshots. I may have to breakdown and finally invest in Photoshop.

Does anybody have any suggestions about where to find some 1920 x 1200 anime or manga wallpapers? Please?