I don't know from Poser but when I have a complex model (any model that has more than one selectable part for you newbies out there :>) and I want to texture individual parts, I select the model and ungroup it. Then I texture the parts seperately based on each parts individual needs. After all that's done, I regroup it and the rest is all a cakewalk from there. Again, I don't know much about Poser and how Bryce treats Poser models but this works with all the other types so far. I hope it helps.