[FASherman]

I'll give you a hint on how to make this work.

1. 2 VB sites sharing 1 DB
2. Create all your forums. Doesn't matter on which site, they'll both see it.
3. Create 2 public groups, one for each site.
4. For Site A forums, user must be a member of Group A to view.
5. For Site B forums, user must be a member of Group B to view.
6. Now hack the code so that if user is logged into site A, user is a member of Group A but not Group B. If logged into Site B, user is a member of Group B but not A.

Its really not that major a hack.