A1 Automatic Wallpaper Changer - Version 1.0 A1 Automatic Wallpaper Changer is a tool to automatically change your desktop wallpaper at specified intervals. You can select any number of images and even a folder containing images to be displayed as wallpaper, and set the time interval from every 3 minutes to 6 hours.The program is easily accessible from the system tray. Supported Image formats are .JPG, .BMP, .GIF, .PNG. Supports windows 2000, XP, Vista and 7, And 15 Day trial is provided free.