Hello, ok so i run PHPZABI and PHPBB on my site and i want people to signup using phpzabi and also be able to login with the same username and password on phpbb so phpzabi has the following in the database _users _events _blogs _help _inspot so as u see it only uses _users same as phpbb so i renamed phpbb_users to phpbb_1 and i changed the perfix of phpzabi to phpbb so now its PHPBB_users phpbb_events ... now how can i let phpbb take the information from phpbb_users -> id instead of phpbb_users -> user_id ??