Thanks for the reply!
Okay, so basically, you're limited to Intersect or Subtract operations, then? No Add? Hmm.. that's a bit of a concern.
Question..
In this screenshot:
http://ac3d.org/images/screens/quake3.jpg
What methods would likely have been used to create that level? I was under the impression that some amount of Add or Subtract booleans could have been used to create more of the intricate portions...
Also, I realize that all the normals/faces are facing out, which I imagine would have to be flipped inwards to make it a playable level...
Thanks again :-)