Change Today Screen Background Image Automatically
What it does is choose a random image from a preset directory (different directory for portrait/landscape images - to allow for correct dimensions - can be the same dir if you're not fussed) and sticks it in as your Today Screen background image.
Random Background Selection
Supports any resolution device
Different Image For Portrait/Landscape mode
Supports Different Directories To Select Portrait/Landscape Iamge From
Preview Backgrounds In The Config Util
New Background After Hard Reset Option