Just in case nobody is aware of this, Xcom 94' has been reworked. You can play the original game as it was intended to be with no limits on hardware or smoke or fires, if you play this new version. I've known about it for some time. I think you can find it on google.
Needs the original game to play. You install 1.0 version, then copy xcom files over into a certain folder.
If you ain't played this, you're really missing out.
Oh, and a damned funny wiki that does a lot of 40k stuff. Spend 10 hours and get lost in this wiki if you haven't already, damned funny 40k content...http://1d4chan.org/wiki/X-Com