It'll always happen with Dynamic hair..if it shows up in poser as 'hashmarks'..also, and someone correct me if I'm wrong, but I've noticed that if I don't export 'universe' when exporting to .obj (you are using that, right?..;), that the hair may go, or sometimes even the clothes..:|
now you can find some older hair props, or even stock Poser hair (it's a little more forgiving because you can scale 'solid' hair around to fit the head, even though it's not as 'cool' as dynamic hair. There's a Beard prop set out there, might be in freestuff, I think it's Greylights', but I could be wrong. Do a search in freestuff for 'beard', there's 'wizard hair' as part of the pack as well..used it in my last pic.
I don't have Poser 5 (just 3 and 4), so I'm not sure of the details on how it works, but you'll see more erudite answers after this one..oh, btw, look in Freestuff under utilities for 'grouper', which makes transporting to Bryce a lot easier..

I wish I'd said that.. The Staircase Wit

anahl nathrak uth vas betude doth yel dyenvey..;)