The hair converter x2000 mentions only works on the default hair that comes with poser. It also prepares it for millenium girl. If you look in the readme files of some hair it'll tell you how to convert it. then you can use the same recipe for your other hair. of course you'll forget or loose your recipe later because once it's converted you will promptly save it to your hair library. next time i do this i'll put the recipe in the tutorial section.