i use the same database. when you set up phpmychat, it gives you the chance to rename the tables to anything you wish. i use "chat_{tablename}".

if you want to be completely integrated, theres only a few rows you add to the vb 'user' table, and a little bit of searching and replacing in the phpmychat code to replace similar tablerows like 'ipaddress' and 'website'.

if i ever find the time, i'll put together some instructions on how to do this properly.