Here's another example.  It's an old test I did (so old that's V3, not V4), but I tried it again today with the V4 version of Kirwyn's hair in Poser Pro 2012.

It works the same, except you need to change the hair root and tip widths.  Basically, they need to be ten times bigger.  (Due to a change in Poser since the product was created.)  I also made the hair a little longer, which tends to straighten out the flip he styled into it. 

If you're doing a close up instead of a full length shot, you might want to make the hair finer and thicker.  You can also make the hair denser.  (I usually do it after I run the sim - easier on the system resources that way.) 

You can use a painted skullcap (like 3Dreams' USC - Universal Skull Caps in the Marketplace) so you don't have to make the hair as dense to get full coverage.

And check out the "Sexy Manga Dancer" video on YouTube.  (It's apparently considered x-rated, so I won't link to it; it features a girl dancing around in her underwear, but no nudity.)  He used three hair groups, but only enabled collisions on one of them, to speed up the simulation.  (You can see the hair in back going through her body when she turns her back to the camera, but overall, it works pretty well.)