We also recommend that you review the system requirements for the edition of Windows Vista that you want to run. This information will also help you to determine if your PC is ready for the edition of Windows Vista that you want to install.

Note: If you are currently using Windows 2000 Professional  x64, you are eligible for an upgrade copy to a corresponding or better edition of Windows Vista, but a clean install is required. Remember there is no short-cut for installing on multiple pc simultaneously. However if you do it with proper information of system configuration the task will be easier and smooth.