wallpaper changer

Can anyone suggest good wallpaper changer software? I'm looking for something small and easy to use. I'm using Caledos right now, but the problem is that it doesn't automatically update the source files so I would have to manually update it every time I add new images. Thanks!

I haven't used it for that purpose, but have seen options for doing this, not sure it's exactly what your after, but heres hoping, it's called Webshots.

http://www.multiwallpaper.com This program may help you..