jurgen36,
Sounds like a good plan. On its face the activation process of Microsoft sounds horribly invasive of personal privacy and difficult.
I had one machine with hard drive difficulties (my wife's machine no less) where HP the vendor kept sending brand new machines to repair the problem. I have lost track of how many times I moved the RAM, moved the hard drives, moved the peripherals, upgraded XP Home to Pro, etc. and the only question asked by a Micorosoft rep when called for a new activation request was: "This is the fifth time you have activated this PID number. I have no problem activating the acount, but I would have sold that computer through a newspaper ad or Ebay."