I do not know yet what format autocad saves to. I would think that it would export to 3DS or something that max uses or maybe X3D(VRML). I was looking at Conitec's download page and there is a max2gs plugin, but I don't have max. If it is just an exporter than maybe I can run it without max. I have GameSpace I might be able to use it and then export to GameStudio.