No it work because the computers are NOT identical and as such, the hardware and motherboard drivers won't be found correctly and you'll need to reinstall XP for everything to be recognized .. And then, if you try to reinstall XP using the same product key, it won't be able to validate because you've got different hardware but I think you can still sneak a few over the phone activations in without Microsoft pitching a fit. I did that with my version of windows 7 on 3 different pc's. Sorry
. If you are doing a new build and you want to transfer the data only then there is a way around that but not the OS.