also, consider this:
If you keep the whole thing SCP compatible, you could easily use SCP stuff in your game, and you would be able to use the SCP bootable CD Taylor is making using Knoppix Linux.
Put a CD/DVD in your drive, put a boot floppy in, reboot, play the game without installing anything, remove the floppy, reboot, and have your originall OS with untouched HD's again. Prefect for use in schools, library's and LAN parties.
edit: and, if you make sure you use no copyrighted artwork (:V:, Interplay or LucasArts) at all, you could easily freely distribute this whole thing, in combo with the bootable CD, as an easy-to-use game requiring no installing at all. Free games are always good, especially if you can get even the tiniest bit of coverage over at GameSpy or something like that, it only takes one link to this place to create an influx of interest.