MacConverter will translate both ways, read the "read me" that coumes with it. You will need to use this for most all "PC" files regardless. This converter creates a specilal code within the file that the MAC OS needs (like the PC needs the RSR file). As for QT, your graphic files "looK" like they are Quicktime because thats the extension insatalled on your machine which recognizes the files. You should also get a copy of Graphics Converter, it will open-up around 100+ different grarhic files including the special BUM files Poser uses for bump maps.