Can I use Windows Anytime Upgrade to upgrade from previous versions of Windows?
You can upgrade only computers that are already running Windows Vista. The upgrade does not work for computers that are running earlier versions of Windows. How do I determine whether I have a 32-bit or 64-bit system? Click Start, right-click Computer, and then click Properties. Your system type will be listed in the System section. Can I change the system type during the upgrade (for example, switch from 32-bit to 64-bit)? No. Your upgrade disc must match your current system type; 32-bit upgrades are valid only for 32-bit systems, and 64-bit upgrades are valid only for 64-bit systems. Can I get a Windows Anytime Upgrade disc in a different language from my current system? No. The language of the upgrade disc must match the language of your current edition of Windows Vista. The Windows Anytime Upgrade disc is available in a variety of languages. Be sure to indicate the correct language when you purchase the upgrade. For more information, see How can I obtain a Windows Anytime disc? How