Hi guys.Here's the thing: I obviously run FS9 in my PC and I want to run Aerosoft's Twin Otter (since the FS9 versions are not that deep systems-wise and have kind of crappy graphics too).Is there a way to make this aircraft work in FS9? Any input is appreciatedThanks in advance

Compatibility only goes forward, not backwards. FS9 wouldn't begin to recognize the MDL file and FSX instituted seperate MDL files for planes and the VC, which FS9 knows nothing about.