Well, you can fire up max and use HABware's obj exporter to export the max file as an object, or 2.) if the file in question is *.3ds, you can import that file into poser, and then re-export it out as a wavefront object. After you gett he object file, you can use a program that will allow you to build a texture map. I recommend steve cox's UVMapper program. Or if you have painter 3D, you can paint directly onto the object itself.