I've had a copy of Windows Vista for a while now, and I installed it a while ago in hopes to finally have a 64bit OS to go with Intel E6420. To my dismay, when I had a look at the computer details on Vista, I noted that it was only running on 32bit. I wasn't aware that Vista had 32 and 64 bit versions, though it would make sense that they would. So does Vista really have different versions, or is it just that my processor can only handle 32bit OS? o_O I've always been a little confused about that. Moreover, would running a 64bit OS improve performance drastically over a 32bit OS? Assuming my processor can indeed support 64bit OS', which I've read many times over that it can, I'd assume that using a 64bit OS would be more efficient than using a 32bit OS, in the sense that I'd be using the full capabilities of my processor. Any clarifications on this would be extremely appreciated!