Using PoserPro2010. 

Acadia, I tried the "shadows only" option in render settings. It did give me shadows, but only on the figure, not on the ground, and all the rest of the scene was white.

Miss Nancy, I did read about the shadow catcher, but not sure I understand it, kinda new territory for me. Are you saying that I can't render the ground shadow? I do have the shadow catch only box checked. In the manual it reads as follows if that box is checked........."The floor will be invisible except for the shadow laying on it, so the only things in your rendered scene will be the figure and its shadow"

What settings would I have to use or change in PP2010 to get that shadow on the ground on a separate layer when I export to PSD, but keeping the rest of the usual PSD layers as well for compositing?

I thought selecting the Custom 3 render setting would do the trick, but no ground shadows, only shadows on the figure came out.