[jpmihalk]

I had the same problem in Vista 32-bit, as KNK mentioned. I ended up finding the Apple discussion forum where someone used an XP driver to update the drivers on his Vista machine and I followed a similar process.

I don't know how Vista 64-bit will respond to a 32-bit XP driver, and would be wary of trying it. However, it seems that iTunes 7.6 is buggy in respect to Vista drivers, so it may be an option to try if all else fails.