Or another good way is to pop in the win2k cd and select \"upgrade\". It will prep your system to upgrade to itself (meaning, for example, upgrade from win2k pro to win2k pro - don\'t ask me why they still call it an upgrade). then it will try to reboot, but just shut it off. Swap your hardware, then when you boot back up it will redetect all your hardware and reinstall (almost) all the OS files, while keeping your apps and settings. You\'ll need to re-service-pack it too. I\'ve done this several times for lots of different hardware changes, like drive-controllers, motherboards, CPUs, etc.