Desktop Earth 2.0
Desktop Earth is a wallpaper generator for Windows. It runs whenever you're logged on and updates your wallpaper with an accurate representation of the Earth as it would be seen from space at that precise moment.
6 Megabytes to download, ~40 Megabytes after installationTested on Windows XP 32 and 64 bit versions. Should work on older Windows variants as well.
Download [Desktop Earth 2.0]