i looked in the device manager i think. In OS X, there is actually a utility that i just found out about. Here is a link about that utility. I'm guessing that changing it in OS X will not affect what it is in XP, but who knows. I will check it out when i get home for sure.
In OS X it's running at 16, but device manager in XP shows 8bus. maybe that's what it should, but i don't know, seems like it should be 16 there as well. nobody seems to know how to change that. i don't have anything in any of the other slots. very strange.