Just to head an issue off at the pass, we will NOT be moving to vBulletin 4 software. vBulletin was purchased by an American company "Internet Brands" who forced out all their developers in the UK and moved development to California. The product is TERRIBLE and causing nothing but headaches for forum operators who were optimistic enough to install vB4 on their live forums.
You can read about the numerous problems with the vB4 software at one of IB's own forums:
http://www.bikeforums.net/forumdispl...ser-Assistance