Urgh . . . skoker, you're running FSX if I remember correctly, right?
What I know applies to FS9 scenery stuff, but it seems logical that it would follow the same guidelines.
When you export from Gmax (right?) you end up with both an XML file as well as an MDL file. The XML file needs editing, to tell it exactly where to place the model. Then you drag and drop the XML file onto the compiler and it detects the MDL (yes, they MUST be in the same folder!) and converts both into a BGL for you to use.
Of course, when has M$ ever been logical . . .
