MS3Config is a Spb Mobile Shell 3 Background Changer. At the moment it only has the ability to change panel backgrounds (among some other helpful tool options), but it has a decent GUI and is unique in that it does not overwrite any changes that have previously been made to your copy of MS3 by other skins or widget packs. Use File>Backup option before you make any changes.

Check the developers site for the full instruction on how to install / upgrade and usage instruction about the application

          

Tags: Mobile Shell 3, MS3Config, Pocket PC, Pocket PC freeware, Windows Mobile, windows mobile freeware, Windows Phone