For a Limited Time – download Windows 8 Pro for $39.99!
To upgrade to Windows 8 Pro, you must be running Windows XP SP3, Windows Vista, or Windows 7. Windows 8 is built on the rock solid foundation of Windows 7, but it's been improved on all fronts. You can install Windows 8 on the same hardware that powers Windows Vista and Windows 7. Windows 8 was designed with Windows 7 apps in mind, because you probably have older apps you need to use. If your PC is running Windows 7, your files, programs and settings will easily transfer to Windows 8. If your PC is running Windows XP or Windows Vista, you will need to reinstall your programs. Some features such as touch may require a new PC.