If your intention is to free up hard disk space by moving your Poser libraries from the Runtime folder to another media (CD or external hard drive) you needn't move the Runtime folder itself. I believe Poser won't allow the actual folder to be moved anyway. But willf is correct about MartinC's MacInstaller. It's been a while since I read the "read me," but I seem to recall that Macinstaller can create a file called ExtraRuntime, which will allow you to store Runtime files outside of the Runtime folder itself. MacInstaller should still be downloadable from "freestuff" under "utilities". Good luck...