Re: 32-bit Win 7 to 64-bit....key?
With all windows installs (except Starter and Home Basic) you get a key for both 32 and 64 bit. However, with OEM installs, it's different. I believe, but don't quote me on this, the key that you get is only good for the version that's installed. I could be wrong on that though, but I do know that if you purchase the retail copy, then it's good for both architectures.
Humans are the only creatures that won't live up to the their potential. Give everything your all. When you die, die on E.
So I ask you, what do you intend to do now?