There's also the putty tool in Poser which can be used to create morphs.

There's a great tutorial somewhere here on transferring morphs between The Freak and M3, but I cannot find it.  The best I could find was this post:
http://www.renderosity.com/mod/forumpro/showthread.php?message_id=1512875&ebot_calc_page#message_1512875
There's a better one buried somewhere around 2003.

My visual indexes of Poser content are at http://www.sharecg.com/pf/rgagnon