I expanded the Borg set Warp-Nine made for the demo into a full-blown style for the final game. It ain't the prettiest thing ever but it does get the job done, it gets the Borg into your game.
http://www.geocities.com/jonas8472/
Probably the best features is a complete Borg_AI_Speech.txt that anyone else can feel free to use and modify for any robot/AI type race. The other text files are Warp-Nine's works in progress.
If anyone else is working on Star Trek stuff or even the Borg, please let me know! I don't want to be duplicating efforts here!