Well, for FSX you find aircraft from FSX, Simviation has a folder for FSX aircraft. Once you download it, go to your computer (os (c

to program files. Once you get there you go to Microsoft Games, Flight Simualtro X, search for SimObjects/Airplanes and then you copy the plane in there or extract etc. Hope this helps, most files say it's for which simulator although FS9 has way more stuff