So, these upgrades? -> http://www.microsoft.com/windows/windows-vista/get/anytime-upgrade-overview.aspx
"Are you already in the Windows Vista family, but looking to do more with your PC? Windows Anytime Upgrade is the affordable way to get the Windows Vista that's right for you."
That is, you can't use these on a Windows XP.
last night i bought and downloaded windows vista ultimate upgrade. it finished downloading and i launched the installer but it gave this this error " cannot extract windows vista to your hard drive. please make sure you can create files and folders in the same folder where VistaSetupPrep.exe was downloaded. return to your digital locker for product support ". i am thinking i am getting this error because i have xp as an operating system. but i am not sure i would like your guy's input and maybe solve this dilemma.

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