I finally settled on a specularity setting of 4 and the 0.1 highlight size that you used. I hadn't played much with specularity, but I can see where it can do some interesting things on a rendered texture to give a shinier, contrasting look. I learned a new trick and that's always a good thing. I still like the greenish tinge in the original displayed image and will have to play more with lights to achieve that same result. It's still irritating to have P5 so drastically alter the look of the rendered image.

My visual indexes of Poser content are at http://www.sharecg.com/pf/rgagnon