"StarterDesktopSlideShow" is an excellent tool created by our friend "hb860" for Windows 7 Starter Edition which provides Desktop Wallpaper Slide Show functionality which is not present in this edition by default.
- Change wallpaper on timer
- Change wallpaper on StarterDesktopSlideShow's start
- Change wallpaper by global hotkey (defined by user)
- Autostart after users logon
- Disable slideshow when on battery mode
UPDATE: A more advanced freeware is available to enable Desktop personalization feature and Aero glass transparency in Windows 7 Home Basic and Starter editions: