The PoserCF zip is for Poser and should go into a proper Poser Runtime folder. The other file is for DAZStudio only. It is advisable to keep those folder types separate although they can be merged if you manually and carefully place the necessary files into their appropriate places. Personally, I prefer separate arrangements, easier to organize and keep track. Remember, for DSON to work properly, add the DAZ content folder to the Poser Library. You won't see the DAZ content but DSON needs a reference point to import the figures, clothing, hair and props.