I'm using Joomla 1.5/phpBB3 and Rokbridge to tie them together. The one (large) problem is that Rokbridge only allows Joomla registration so I cannot ask members anything during registration that will put put into their forum profile.

Is there any way to hack the registration files so that some custom fields can be saved into both CB's user table as well as phpBB3's profile table? They are in the same DB for my install.