Need to have posts per forum per user

[kerpen]

On my site we elect moderators. To be eligible to vote in a given forum a user must have more than a minimum number of posts in that forum. When I used UBB I wrote a script that parsed all the forum indexes and created a file with an array of postcount values for each user. What would be the best way to accomplish this in VB/MySQL? I think it shoudl be a relatively straightforward query, but I figured I'd ask the experts before fumbling through MySQL docs.

Thanks.