[SouledOut]

What I would think is to make a new category that acts as a forum, and have it say your domain's name and led to those sub-forums, and when you enter your forum (the domain name one, the one you want to make the forums for) copy the URL and make http://yourdomain.com/forums lead to there. I would also like a hack like that, that would allow my network sites to share our database, yet have forums away from ours (but would obviously have tons of links to our main forums) \

http://phatforums.com uses something like that (warning it's pornography forums). You might want to ask the administrator if he could sell you what he uses.