Thank you guys. Pepe, I like the Mac's visual style and desktop look more than Windows' of course. I just feel more comfortable using Windows, don't know why, but maybe because I like to play online games lol.
I love D-Art. Alota people there with a lota talent, but not all of my wallpapers come from there. As far as candybar? I have no clue what that is, the icons are standard icons from Leopard.
In system prefs, click on desktop & screensaver and in the left menu, select an album book of pictures from iPhoto, or use the Leopard ones. Click "change picture" choose the timer, and click "random order". Thats all there is to it.