A.3. Windows Anytime UpgradeIf you have Windows Vista and you want to upgrade to another versionfor example, from Windows Vista Home Basic to Windows Vista Home Premium, or from Windows Vista Home Premium to Windows Vista Ultimateyou don't have to buy a new disc. Each copy of Windows Vista actually has all the available versions on it, and you can unlock any version by paying for it online. If you're not sure what version of Windows Vista you have, select Control Panel |