A while ago I bought Win Vista Ultimate retail pack. It came with a 32 bit
version of the OS and the 64 bit version as well. Only one key.
I have already installed the 32 bit version & used the license key.
What if later, after I upgrade my computer with a 64 bit processor & so on,
I want to reinstall Vista & decide to put the 64 bit version ? Am I allowed
to use the same license key ? If not, why did the retail box came the 64 bit
version too ?