I realize that mac converter works both ways, but if I CONVERT a mac file to a PC file, then it will be a PC file and won't work on Mac, right? So how do I distribute a set of PC/MAC files without doubling the download size with a seperate file for each system? There are lots of PC/MAC downloads here on renderosity. I downloaded a few and they all only have one set of files. Care to point me to some references on the pp2 file format so I can change it to work with obj files?