Serious database modifications

[fiveeight]

I'm thinking of making some serious database modifications (i.e., new tables and new pages based off those) to add some functionality to my music forum. What I'm planning on creating is a new Music Reviews and Ratings system on the forum.

I guess what I'm asking is (1) how feasible this is, and (2) if there is any kind of guide to heavy-duty VB modifications.

What I'm looking for is some kind of specification of the VB system, what PHP classes and functions are available, and the typical database set-up.

Anyway, the second part is more important. I'm probably breaching new territory with this mostly but if there's any kind of mod that has done stuff like this before (with new tables and new pages, etc.) I'd like to see it so I can get ideas.