Freespace 2 -yes, the last Descent game.

http://www.hard-light.net/wiki/index.php/Main_Page

http://freespace.volitionwatch.com/fsscp/about.php

http://scp.indiegames.us/news.php

It's not impossible, but it would be quite a PITA

-Someone get on it!

If you do, I'll gurantee you'll win the dreamcode contest ;)

My god, that would rock SO damn hard!