CoD Cleaner

http://games.softpedia.com/get/Tools/CoD-Cleaner.shtml

This great tool saves your Call of Duty maps so you don't lose them when reinstalling the game

Here is a clever and creative program for those of you with messy main folders full of unwanted maps and mods. Just start this exe up and select either CoD or CoDUO and just let the program handle the rest.

What it does is move all the custom pk3 files into a folder called in the main folder, so you never lose your pk3 files if ever you want to save any. This is a great thing, and it works very well, go ahead and try it yourself!