A system builder license is OEM. If you've got that key, and you can still boot into Windows on that machine, why don't you try an in-place upgrade. I believe you have the option to enter the product key before the installation begins.
I can't get into Windows and I didn't really want to give away my Vista Ultimate to a customer.
The problem I'm faced with is the user forgot their password (old lady) or the profile is corrupted. I've tried all the PW's she thought it was and even the "NT Offline Password" editor, it said it removed the PW, but it doesn't. Interesting program, played with it for awhile, too bad it won't work.
http://pogostick.net/~pnh/ntpasswd/
Also tried activating the Admin account, which I did, but you have to disable all active user accounts on the machine before administator shows up on the login screen. When I attempt to deactive the user, it says "user not found". Funny, I can browse in the cmd window to the users directory and it's definately there. I also tried a couple system restore points, no dice. This is a FRUSTRATING problem!
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