With the Windows 7 Professional Upgrade Version, fewer walls stand between you and your success. You can run many Windows XP productivity programs in Windows XP Mode and recover data easily with automatic backups to your home or business network. You can also connect to company networks effortlessly and more securely with Domain Join. With all the exciting entertainment features of Windows Home Premium, ita€™s a great choice for home and for business.Currently running Windows Vista?If you have Windows Vista, you can purchase Windows 7 Upgrade versions. You can do a clean install (backup your files, clean install, and reinstall your applications) or an in-place upgrade (Windows 7 installs over Windows Vista). Currently running a version of XP? If you have Windows XP, you can purchase Windows 7 Upgrade versions, but you must back up your files, clean install, and then reinstall your applications.