Apr 22, 2003 ... Windows XP Creativity Fun Pack PowerToys Wallpaper Changer
The Wallpaper Changer PowerToy allows your desktop wallpaper to change
automatically.
It also lets you choose which images to display. Select
the folder of images to display as a slide show and set the display
interval to change wallpaper every few minutes, hours, or days. The
simple intuitive interface is easily available from the system tray.

http://www.microsoft.com/download/en/details.aspx?displaylang=en&pf=true&id=18097
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