actually yes you can - ever version is on the same dvd - just pick the version you got and enter your key and it will work (as long as it is not an oem dvd)
PotGoblin is right. First, make a copy/copies of your friend's DVD and give the original back to him. You don't want to lose his copy. Then boot from the copied DVD. When installing you'll be presented with the list of versions. Just make sure you pick the version that matches your license.
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