a few years back i bought flight simulator delux. after installing it on my first computer i bought the acceleration expansion pack. i tried installing that on my computer and apparently my graphics card wasn't powerful enough, so installed it on a second computer problem free. since then my first computer fried and the second had to be formated. before re installing i bought a new computer and installed on that one, i tried to re install on my old one but it told me i had exceeded the amount of times i could activate. is there a way i can reset my product key?
This would be a question for MS tech support-- I imagine they'll reset your key if you call them.
I've seen this happen to a couiple of guys and in both cases a call to Microsoft sorted it out without any problems