The a2ms-0.3.exe file you have requested: Utilities / Miscellaneous / Armada II Mod Selector - 109.5kb is not available. Perhaps try browsing all files for the game Star Trek: Armada II and upload any files you want to share or are missing. This is the only information we could locate:
This allows you to switch between mods and keep you multiplayer game intact so that you can play online. Unfortunately, It requires a LOT of work on your end. You need to create a file to have the mod be assoicated and recognized with this tool, and it aint easy creating them, and pretty much no mod i've looked at had that file pre-made. If you don't mind the extra work, this tool is excellent. But, for me it requires too much work to be effective.