With the advent of Poser 5 on Mac OS X, long file names (and path names) should work just fine. (And if they don't it's an application problem not an OS limitation.) Actually, I experimented just now by copying and renaming a file in my character library. It did work, although Poser seems to have gotten itself in a bit of a twist about it; when I selected the file it popped a dialog asking me to locate file ".cr2". When I selected the file in the dialog, though, it opened just fine. (The name display in the library was so small that it was completely illegible, so Poser would need some GUI work if they want long names to be practical.) Poser 4, however, will continue to be limited by the OS 9 filename limits. Also, Poser 5 shouldn't require MacConverter for most file other than to decode pcf geometry. (Though I haven't gotten a chance to experiment with unzipping raw PC files into my Poser 5 tree yet.)