Hello everybody... ScottA, I'm not sure what you mean by "horizontal", but the only difference on TEXT files between the 3 platforms are the linebreak codes (not counting 1000's of different encodings in the "upper" ASCII codes... :-) Thankfully Poser completely ignores the differences, so at least this won't cause trouble. willf, the Mac type/creator codes have nothing to do with RSR, it's a "system level" registration of the file kind & origin, independent of its name. Although it sometimes causes a bit of cross-platform blues, it's a very nice feature - this way you can have both Painter and Photoshop TIFF files that "stick" to their original app when double-clicked, and even if you rename "mypic.tif" to "bogus.exe" it will still be a TIFF file and still connected to the app it has been created with... :-) On the down side Mac users can name "MyVictoria.cr2" into "JustMyVictoria", .sit-it, post-it and leave PC users on their own. If you are a Poser artist on Mac - please don't do this! As Don said above, make a copy of the folder with your files, drag it onto Maconverter, select "Export to PC" by menu and hit "Convert". It will properly check all filenames for the PC and create the RSR files containing the preview thumbnails. Remember that Maconverter will re-convert the whole lot to Mac as well, so the resulting file set will suit your Mac customers as well. Don, you don't have to reset preferences or copy the utility (?) - just select "Export" by menu. However, you should copy the folder (to be converted). victimorcrime, you can use the StuffItExpander for Windows to extract Macintosh .sit files, but you can't create the RSR files or "re-construct" the filenames on a PC. Most of the time this won't be a real problem (because Poser will write correct names, it takes the user to intentionally rename them). If this happens you can only try to contact the creator and ask for details about the files. 'Hope that helps, MartinC