How many different computers can I install Windows Vista on using the same product key?
The number of computers on which you can install Windows Vista depends on the software license. For example: • If you acquire Windows Vista via retail purchase (boxed product), it may only be installed on one computer at a time. You may choose to uninstall Windows Vista from the initial computer and install it on another computer. You will then be required to re-activate that copy of Windows on the new computer. • If you acquire Windows Vista pre-installed on a computer, it may only be used on that computer. • If you acquire Windows Vista via a volume license, visit the Windows Vista Volume Activation page.