After it was pointed out to me that the obj file format can store curve primitives, I decided to play with Python again and write a little script that'd export Poser 5 hair as curves (which is how they are stored and rendered, and I think programs like Maya Unlimited, Shag Hair or Shave and a haircut use curves too). The script seems to work fine, I get nice obj files with lots of points and curves in it. The problem is, however: Is there any program that can import and render these files? I tried the demo of Carrara 2 as well as the demo of Cinema 4D R8 (both on OS X), but none of them would read the obj file.