If I wanted to import custom-made 3D models/textures into a map for a mod, like a fbx or 3dsmax file, are there specific instructions for making it show up properly?

you can also use gmax with renx plugin - basically a old 3d modeling app for games like cnc generals wc3 ...

heres the link:
http://www.cnclabs.com/forums/cnc_postst16946_Generals-Modding-Resource.aspx 

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