Ok. Thanks for the help so far.
First, I modelled the object in sketchup, and exported it as a COLLADA (.DAE) file.
I opened it up in modelconverterX, converted the textures to .DDS, and exported it to a .MDL file.
Once in ADE 175 and opened the airport that I'm working on, I clicked Lists...
I have been trying to include models (.mdl) in my airport recently. They show up fine in the editor, but when I compile and go into FSX, all of my other edits are present, but there is no model. My file layout is as follows:
C:/...FSX directory.../Addon Scenery/EGTR (The airport which I'm...