I can skin that perfectly fine using the export BMPs from the game. No problem whatsoever. And it's probably what I'm going to end up having to do, and it's not that big of a deal. I just wish it worked my way.
If you guys can skin an airplane with new BMP skin textures, I should be able to do the same with a building. The only thing that's different between what I do and you do, is that there's a the AC3D texturing step I have to go through. I think HTC actually applies the textures for your skins, using whatever software they use.
Unless anyone knows where I should be looking, I'm going to just move on and texture with the available building skins.
At this point, I can make and texture buildings, berms, and square land tiles, and I can make terrains. I need to set the idea of custom textures down and just move on and make something for cripes sake.