Are you able to find the files using Windows Explorer, or if on a Mac, Finder?

If you can, and if they are in Poser 8RuntimeRuntime then I suggest that you move them out of there to a new folder under My Documents (or the Mac equivalent) and make that a remote Poser library.

I appreciate that some of the above may not be clear but if you could please post some screen shots of Windows Explorer or Finder, showing where things are we can take it one step at a time.