Here's a cool utility to generate a depiction of earth as seen from Earth orbit on your desktop. Supports very high res images. Be sure to enable internet cloud updates - every 3 hours.
http://codefromthe70s.org/desktopearth_dl.asp-Russ
Desktop Earth 2.1
Introduction
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.
