I'm in dire need of a hard drive upgrade, which includes replacing my drive that holds Vista. I read on the microsoft website that if i install a major upgrade(in this case it happens to be what they use as an example: memory and hard drive) ill have to reactivate windows. or i can simply uninstall it and reinstall on a new machine(basically i have to uninstall anyways). anyone have experiance with this? is it really that simple? what are the limitations on reactivating? i tried google searching it but all i get when looking for anything involving vista activation are ways to bypass it.