I have seven machines, each of which has some version of Poser on it.  This is the method I use:

     Copy the P7 runtime folder to a flash drive or external HD.

     Now copy the PP2010 shared documents downloads/runtime to the flash/HD, overwriting any existing P7 files of the same name.  (This is to protect the PP2010 Python and preference files).

     Copy the flash/HD runtime to the new machine's PP2010 shared documents downloads/runtime, without overwrite.

     Put the flash/HD in storage as a backup for your content.

     It has been my experience that the Gen4 DAZ characters work, running from the shared documents downloads/runtime.

Poser 12, in feet.  

OSes:  Win7Prox64, Win7Ultx64

Silo Pro 2.5.6 64bit, Vue Infinite 2014.7, Genetica 4.0 Studio, UV Mapper Pro, UV Layout Pro, PhotoImpact X3, GIF Animator 5