This is Microsoft's own newsgroup, and is only for Microsoft Flight Simulator.
rec.aviation.simulators
Topics-Non-combat flight sims: FS5, "FS6"/FSFW95, ATP/AS, FSFS SimCopter, X-Plane, Sierra Pro Pilot, Flight Unlimited, FS4, Tower, Schiratti Commander.
comp.sys.ibm.pc.games.flight-sim
Combat Simulators like EF2000, ATF, Longbow.