My computer is a quad core i7 with 16 GB of RAM. I'm using two lights inside an environment sphere. (Normally, I will only use one light, but I wanted a back light in this scene.) As far as displacement maps are concerned, I hadn't given that a thought. I got up about two hours ago, checked on the render (my computer goes into "sleep" mode if left alone, so it didn't render all night long) and it had just started on the top row. After working for more than two hours now, it's still not done with its initial row. I can't remember a Poser render taking THIS much time!