[Plugin: External DB authentication] User Roles

So it looks like this plugin will only acknowledge a single user role right? You can set up a single test in the plugin settings, but no more. However I have a variety of users on my site with my own hierarchy of roles. I would like to map my user’s roles to the Word Press roles.

This isn’t currently possible is it?

I’ve been tinkering with wp_usermeta table in the database, but I’m having a hard time figuring which fields control the user’s role. There’s wp_capabilities (a serialized array I don’t understand yet) and wp_user_level that both look relevant. But I still haven’t been able to convert a subscriber to an administrator so maybe I’m still missing something? Any ideas?

http://wordpress.org/extend/plugins/external-database-authentication/