So, the plugin I can find is for version 6 and 7, some really old versions.. Actually the ones I learned to use 3dsm with..
So how do I handle this in v9?

Not if you don't find the correct version.

Well, I googled to my full ability, and I never found a cmx plugin for versions above 8.

By the way, the CMX's have texture mapping and stuff right? Because I have no idea how to map skins onto the cars as they are now
One color does not look as good, as shown :P

Edit: Had to update that render, it was really bad.. Now it's decent, but some skin mapping from the CMX files would be awesome
Although I still haven't fixed low-res shadows