Thanks for the reply. Unfortunately with DAZ's library manipulation ability I didn't break up my runtimes and so will have to reinstall anyway.  But knowing I can have multiple runtimes will be a big relief for simplifying my library content in poser.  Infact I may build a dir outside of poser and daz and link them back to it instead of putting into either programs directory structure.  I was reading an earlier post and that seems to be a even better option.  Again thanks for posting a respone to my question.