Right. The stuff in the My Library can be moved to the external. The folders that say things like animals, cameras, lights, people, presets, props, etc are the DS files. Everything in the Runtime folder is what Poser wants, but DS wants the stuff in the runtime too, and if you are using the DSON plugin Poser wants some of the DS files now too. One big happy family. Your version of Poser and DS will have no problems sharing the runtime. The last time I installed PP2012 and DS4.5 both programs offered me a choice of where I wanted included content installed, so I was able to put the program on my computer’s hard drive and all the extra content on the external.