I still haven't been able to find my old copy of Windows 7 or the Key. I DID however find my copy of XP and its Key. But I make it all the way through the setup to where it says Starting Windows and I get a BSOD. It's happened 5 times.
When I punch in the key it says "Your product key works! Continue when you are ready." But when I push Activate it gives me error code 0xC004F061 "The Software Licensing Service determined that this specified product key can only be used for upgrading, not for clean installations."