Thanks for all of the advice, guys. I picked up a couple of the 110 CFM fans from altex, and will be putting them in tomorrow evening (in the mean time, the door is staying open in the hood with the single fan running in there. It's helping, but not as much as I'd like.

Oh, by the way, those fans have gone up. They're now about 15.00 each, and you can get a plug-in cord for them as well.