You probabley already did this, but did you export is from Poser as an obj first? I can't imagine the Las Vegas hair is that much more complex than Antons changing pony tail (curly mode) with two extra tail bits added (which is part of the current scene I have going). Have you used heavy models in Bryce before? I'm new at this myself, so I don't know who's who here yet. Sorry if I'm pointing out obvious stuff to you.