I'm a new member here so I'm not so familiar with Flightsim.com. Most likely
Train-sim.com

I like to play Microsoft's Train Simulator alot and always like downloading new
locomotives and rollig stock. But when I got to play FS2000, I really loved it
and always liked downloading new aircraft. However I would actually like to
edit the defualt "World Travel Airlines" Boeing 777 so I can use it as a
scenery object in Microsft Train Simulator. But FS2000's file format is .MDL
and MSTS's format is .s. Is it possible to convert .MDL files to .3ds files?
Eddie, you might find an answer to your problem on the train sim forum. It is
at www.train-sim.com. You will need to sign up for a user ID and password.
Jesse