They've answered: 'Well, first of all, you must own a copy of 3DS MAX in order to convert .max files. PolyTrans can only convert .max files by plugging PolyTrans into 3DS MAX itself as a native plug-in system. Second, I will never do a Mac port because there is literally 0 demand for it. I think we've sold 16 copies for every 5000 copies of PolyTrans. Most notably, PolyTrans is 100% dependent upon the Windows UI and all the Intel based third party libraries (SoftImage, OpenFlight, Metastream, etc. etc). hence, the need for a Windows emulator. Sorry!' Or, obviously, the big windows conspiracy cannot be attacked. . . Guess I will take all CD's to a Bureau or something and rent an PC for a lot of hours, convert it all and save on Mac CD-R's... pathetic...