Always wondered if swapping folder names to use mods couldn't be easier? Now it is!
With the Mod Loader Alpha for Age of Empires III, switching between different mods and the original game isn't a find-the-folder-in-windows-explorer-and-manually-rename-it job anymore.
The Mod Loader gives you the option to select which mod you'd like to play, and after one click on the "Compile" button, the filenames are in order. But it doesn't stop there, as pressing "Start Game" will also launch Age of Empires III for you.
For further info, see README.txt inside the zip file, or take a look at the Mod Loader Thread in the Modding Forums. That's also the place to submit your questions and suggestions, or to report bugs...