Also, I can't find the file that vista uses for resuming.. here is what I think is going on.
1) my vista partition is set to active, so it uses the bootlaoder from there.
2) how vista's resume from hibernation knows to load the hibernation file on my winXP install is beyond me, but it does.
3) my guess is, it's a file on the vista partition .. we'll know soon. I'm trying 10.4.3 OSX again, so it's getting axed.