Shouldn't need MacConvertor with Poser 5 Mac cause it does now read the extension (a'la PC) instead of using the data in the Mac resource fork. Best thing to do is move the whole PC runtime onto your Mac and use the "add new runtime" from the top popup from the Library Presets and then selecting the PC runtime. Then select the PC runtime folder thT appears there. All your stuff should be there, with the previews. I haven't tried this way but so far the 3 or 4 PC files I've loaded have worked just fine. There are also several posts on Poser 5 on the Mac forum here at Renderosity which may be of interest. Best; Dan