I recommended another similar program here awhile back that was around 1mb but I had strange computer errors with it and the interface was not very user friendly so I found this smaller one called Any Wallpaper that is around 350k in size and it works flawlessly. It has a simple interface that is easy to grasp and you just select the folder that has the pics that you want it to display. You can set it to change wallpapers anytime you want down to every minute. It can display the pics in order or random and it has a lot of wallpaper size options. Plus you can double click it's tray icon to change the wallpaper instantly. I wish I would have found a program like this years ago so check it out if you get bored with wallpapers and are tired of having to change them manually in XP. This program works with Windows Me, Windows 98, Windows 95, Windows 2000, Windows Vista, Windows NT, Windows XP.