Stopping fluoxetine

Question 0 Sign in to vote ok, so I've already brough a copy of Win 7, but it seem like the product key is the same as it was with vista, and is only good for one computer at a time, so i was wonder if its possible to just buy the key without the software, since i really don't feel like paying a full $188 again for it, cuz i would prefer to have it on both my desktop and laptop if at all. TechNet.