From Vista’s EULA found here:
13. UPGRADES. To use upgrade software, you must first be licensed for the software that is eligiblefor the upgrade. Upon upgrade, this agreement takes the place of the agreement for the software you upgraded from. After you upgrade, you may no longer use the software you upgraded from.
So save yourself some pain and angst, pay for the full version and still have two operating systems...
















thats good info. i didnt plan on buying it now but...ill remember that in the future 

I would have thought you could use both. Iook like I'll be getting the full version. I wonder if microsoft is already trying to fade out XP as they will sell a lot of upgrades.














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