Would it make any sense to install a copy of XP Professional (retail) in a virtual machine in order to test the Activation Key for authenticity? The reason I ask is that I purchased a used copy of XP Pro retail version for the key that I need to migrate my existing installation to the new pc I intend to build. However I am not ready to build it at this point but I still want to confirm that I have a genuine and available key. If you all think its a good idea, what would be involved in doing so, and what would I need to do to uninstall it when I am ready to reuse the key on the new machine. If you think it's a bad idea, what would you suggest I do to validate the key? Thanks in advance!