Sorry this took so long. I looked for the 3D model files I have...somewhere. I'm not finding them. :-( Try google.com searches like this: http://www.google.com/search?sourceid=navclient&ie=UTF-8&oe=UTF-8&q=dxf+comp uter <http://www.google.com/search?sourceid=navclient&ie=UTF-8&oe=UTF-8&q=dxf+com puter> Craig R.