I'm having trouble with dynamic hair in Poser 9.  Not sure if this is a new problem with Poser 9 (I didn't use Poser 8 much), but I did search this forum and didn't see the problem mentioned.

The Genesis Hair (a proxy that's supposed to speed up simulations, no relation to the new DAZ figures) doesn't work correctly in Poser 9.  In particular, it has two skullcaps, each with its own hair.  The point of this is to allow you to turn off the second skullcap when it's not needed, and turn it on when it is (for closeups, say).  Also, having two skullcaps lets you vary the hair - each can have different kinkiness, lenth variations, color, etc., for a more natural look. 

But Poser 9 doesn't let me use both skullcaps/hairs.  It only shows one when I go into the hair room.  I cannot bring up the other one. 

The results with only one hair look terrible.  Way too sparse, even with the hair density increased.