http://pws.prserv.net/marcioab/v3-1.wmv

...created with a few polygons of Poser6 Dynamic hair with the following settings:

Do collision: YES
Gravity: -0.0005
Spring Strenght: 0
Air Damping: 0.5
Spring Damping: 0
Bend Resistence: 0.5
Position Force: 0
Root Stiffiness: 0.05
Root Stiffiness Fallof: 0.33

Hair Density: 10,000,000 (4771 hairs)
...
Verts per hair: 10

This was the best I got to avoid the hair keeps jumping or moving when it should not.

Question: Can you give some advise on those parameters ?

Thank you.

can you give times, both for the calculation of the dynamics and to render?

The dynamics calculation is very fast: 15 seconds for all 120 frames. The render is far more slow: 38 minutes for all 120 frames (19 seconds per frame) Render set in Auto (the one associated with Min shading rate = 1.25), 532x566 in size, codec MS Video1 @ 100%. CPU = AMD64 +3200