I found the freeware wallpaper changer at one tip a day a great blog that posts a useful tip every day. The wallpaper changer changes the current wallpaper in an interval between 15 minutes and 24 hours. It already has six nice wallpapers to in an album and it is easy to add new ones to it. You do not have to configure the program at all, just add some more wallpapers, delete some and set the interval, that is all.
