That Upgrade Advisor is so wrong in many instances. I can't even begin to tell you how many people I've helped that claimed their NVIDIA 8800 or similar was not compatible, and similar instances.
I recommend never to use that at all, to be honest. It's misleading and plain out incorrect in most cases.
And drivers are best acquired through the manufacturers' sites.
And as a side note, w7pro was banned by the other forum I mod at by the site owner, for spamming type posts after being warned. He is a paid poster and that kind of thing isn't so cool:
http://windows7forums.com/member.php?u=39100
The reason this isn't cool is because the posts always seem to show up when uncalled for, when there has been previous success.