Phantast....you are not familiar with the Mac's file system here. Mac will replace a same-named directory; it will not interleave new content. Annoying at times, useful at others. In any case, since the vast majority of Poser content is archived as a Runtime directory, whereas the PC user will find it unfolds into the Runtime of their choice, the Mac user will end up creating a duplicate Runtime...with a superscript to identify it as a duplicate. So, at worst case, the Mac user is in same place as a PC user wanting to organize their content into multiple Runtimes; open windows for all of them, and drag folders and files across. But if the Mac user can still use Classic aps -- or boot into OS 9 -- Martin C's lovely little pieces of shareware will do to an identically-named directory just what the PC user who packed the Poser content expected; put files into identical folders preserving the overall structure.