I recently bought Dark Forces again on Steam and I've been having a blast replaying it. I remember when I was first playing it back in the day that there were a lot of fan made levels. There was one in particular I remember where you are investigating a derelict Star Destroyer. Does anyone remember the name of the level?
Dunno, but it's probably here: http://www.df-21.net/downloads/ Also, consider using the rebuilt engine; http://xlengine.com/ It allows modern mouse / keyboard usage (mouse look, etc) and re-renders everything beautifully.