"Early adopter syndrome" is a pain, eh? Right now there are a bunch of PC products that don't have drivers. The iSight cameras in MBPs not having drivers should not be a major surprise. Vista drivers seem to be slightly different from XP drivers, and I'm not sure how, but it's pretty obvious that new drivers will be a major issue for a while, if for no other reason than the coders need time to write them.
Having a different device code can mean a simple upgrade in the hardware or a completely different device-and it could be as different as being from a completely different vendor too. Tinkering with drivers is like pushing buttons on an unlabeled panel just to find out what they'll do; you may be fine, or you may find the self destruct button by mistake. At least goofing up a driver that doesn't work won't blow anything up.