It is not all that difficult if you take it step by step. 

If you don't have the DSON importer for Poser from DAZ, get it.  Install it.  The importer comes with Genesis Starter Essentials, the Poser Companion files for it, as well as the Genesis 2 Female and Genesis 2 Males Starter Essentials and their Poser Companion Files.

Install the DSON.  As it posted above, if you don't have a copy of DS4 on your system, you will need to make sure the check box in the importer installation is checked so that the required DS files are installed with the importer scripts.

Check Poser's python folder to make sure the DSON importer scripts installed.  Install the Starter Essentials and the Poser companion files to a separate external runtime outside the program files folder.  Do not install to the main Poser runtime.

Since M6 is simply a morph set for Genesis 2 Male, that is one you want installed the most.  Install the M6 files to the same runtime as the other Genesis/Genesis 2 files.

Launch Poser.  Check the drop down scripts menu to see if the DSON python files are there.  Point Poser at your Genesis runtime.  If you have the files installed correctly, you should see the files.  Do as you do with any other figure in the Poser library.

Now, if you are using a 32 bit OS or P10 (which is a 32 bit app), you can run into slow downs or library lock.  Library lock is where the library stops working.  At that point the only option is to exit Poser and try again.

Sorry for the long post.