jfri,Thank you. I very much appreciate your help.I have read several posts in forums (at flightsim, AVSim, etc.) in which someone tried to re-install FSX on their Win 7 64-bit computer and it refused. Then they were "locked out" of having any way of running FSX. Some of these simmers even contacted tech support at Microsoft and could not get FSX to re-install.jfri, I also wanted to double-check to see if you have the FSX Gold version with Acceleration? (That's what I have, and I will try to do a re-install during the next couple of days, IF your assistance is based upon having the same version of FSX and operating system as I have.)Also, do I need anything else besides the 3 DVDs that come with the "Gold" version.? (Any other service packs, utilities, etc.)Thank you again,Randy (NR16020)