OK, I'm going to assume that main.inc.php should stay, and db should be changed to mysql.inc.php
Well I've done all that, and I still get:
DATABASE ERROR: CONNECTION FAILED!
Unable to connect to the database!
Please contact your server-administrator
I think it's a password thing, but MyPHPadmin doesn' t seem to allow clear text passwords... I have no idea where to go from here.