Nope, the 32 bit and 64 bit are different. If you have the original CD, you could try to install the 64 bit with your current key, but I suspect the key determines what version you actually get. I could be wrong here, but why else would MS sell 32 bit version with different product codes vs the 64 bit versions....
I cant really gove you an answer,but what I can give you is a way to a solution, that is you have to find the anglde that you relate to or peaks your interest. A good paper is one that people get drawn into because it reaches them ln some way.As for me WW11 to me, I think of the holocaust and the effect it had on the survivors, their families and those who stood by and did nothing until it was too late.