Hey, I know with poser6 there are two main  libraries  for your poser content.  Your Poser6 (runtime) and (Downloads) If your content is in a ZIP file and you are unsure how to get those files into poser and your running a windows system not sure how it works for a Mac someone els might be able to tell you. Extract files to "C:Program FilesCurious LabsPoser 6Downloads"

Not sure if that is of any help to you.