OK, all you computer guys, here is the problem. Bought 3 planes, RealFlight and several other goods from a guy. Already own Realflight G2, the version I got with my "deal" was an earlier version. The jewel case does not have the S/N, nor does the box, (no other information), how do I get this installed? I gave the program to a friend that has SP and would love to be able to get him set up.

Thanks