Win Vista WallPaper Manager:
Thumbnail Viewer for image chooser
Change in list order or random order
Image is best fitted to windows
Filters are used for resizing
Load and save Gallery lists (image file lists)
Switch individual images on / off
Previous and Next images
Run on a Timer (minutes)
Changes background colour to suit image
New Features:
Now Plays Video Wallpaper
Use Mpeg and AVI
Renders the video as your wallpaper
Verrrry Impressive
Source code is free (of course) Mail me
Load and save Gallery lists (Video file lists)
Switch individual Video on / off
Previous and Next video