I just bought a new Laptop w/Windows Vista Home Edition installed on it. I am presently using a Dell 4600 Desktop. I am not really thrilled with Vista although it is probably a better program than XP, I would like to install XP on the laptop. My question is, I have an installation disk that came with the 4600 desktop. Is the windows serial number imbedded on that setup disk so that it cannot be installed on a different computer? Thanks for the help. Bill email:wcm555@nycap.rr.com