I finally got off my arse, and wrote a client application that runs on Sun Solaris 10 for those USB Missile Launchers that you can get from thinkgeek. (
http://www.thinkgeek.com/geektoys/warfare/8a0f/ ). I've only had it for approx 12mths...
Took approx 2 days to get a working solution (eg the launcher moves and fires the missiles), now just need to polish the UI.
Once done, I'll upload it to my personal website...
PS. I know there are already a few FOSS clients, but they all need a bazillion dependencies, I just wanted something that works out-of-the-box with no hacking on my part...