Hmm. Jiggles5(latest version) script and also previous ones doesn't working. Shows warning window with this error: application can't run, because tk3.dll not found. Also with next try shows other window with this info:
Traceback (most recent call last):
  File "", line 12, in ?
  File "C:3dlabe frontierPoser 6RuntimePythonliblib-tkTkinter.py", line 34, in ?
    import FixTk # Attempt to configure Tcl/Tk without requiring PATH
  File "C:3dlabe frontierPoser 6RuntimePythonliblib-tkFixTk.py", line 1, in ?
    import sys, os, _tkinter
ImportError: DLL load failed: Íå íàéäåí óêàçàííûé ìîäóëü
I have SP3 installed. How I can fix it? Files from Python 2.2.3 can help?

Found some interesting plugin "Poser Physics" on Content Paradise.
http://www.contentparadise.com/us/user/poserphysics_product_16429
Somebody tried it? It support soft bodies?

Also I've tried to manually keyframe morps. It's easy, when animation is constant and short like walking or running, but when you have always changing dance animation this is really lot of work. And personally I want real soft body physic. Its most easiest way, just setup parameters like gravity, springs acerbity, weights, etc and job is done. I'm interested what Poser Physics can do.

vince3, thanks for the info, but i'll try easier way first.
Little_Dragon, this is only maded by keyframed morphs?