Well, i've got a similar problem. I've got MySQL all running good, i created the db as you guys said up above and everything. It all looked good. But when i get to the PHPBB install page, and fill it out, and click install, it keeps giving me the following error:
The PHP configuration on your server doesn't support the database type that you chose
I've chosen MySQL 3.x, which is what i'm running. This is really frustrating me.....