Again for an even better answer:
On PoserPro a placed my question and got the following answer:

**I don't have Poser 7, but I assume this will still work:

1. Export Wavefront OBJ with "as morph target" checked - you can then apply this to the head in future projects;

• or -

2. From the object menu, select "spawn morph target", give the new dial a name, then save the character in the figures library for future use.

You won't be able to redistribute either of those without further work, but for personal use that should do it. 

**So now problem 2 seems to be solved: 
-just open M3 besides SimonG2.
-set mouthA in SimonG2
-inject aay and are phonemes from M3's expression list (buy at DAZ3d)

• set M3'head with phoneme Aay
  -Open Morph Tool >Combine and fiddle around from the Aay position until you are satisfied with the likeliness with SimonG2's mouthA
  Last: Object>Spawn Morph Target under name: 'mouthA'  for head M3

Do this with all the Phonems of SimonG2 and you are ready for the Talkdesigner, unless you have aquired a viseme-file for M3 (Daz3d)

Hope this will help.