One way you could import a lot of forums to the UBB would be to convert to phpbb then use the ubb importer in the member section to import from phpbb.
I'm not sure how complete the phpbb converter is though, we have a discussion on it, mainly between Rick and I, from several months back. I think the final error in it was user titles not coming over properly, but it's not really a show stopper for most.
Last edited by Gizmo; 01/07/2007 10:17 PM.