one approach is up ...
I am not sure how well this will work but checkout
http://fksa.org/forumdisplay.php?f=130
Part of the problem is vBulletin is so powerful, full of features that I am not aware of many of them. Anyway, I've set up one approach that might serve ... or not! Anyway, pools open, lookover the instructions and let's give it a whirl if you want to. There are dozens of different ways of doing this, this is just one.