Yeah, that's a Reflection Map.  This is accompished by just plugging an Image_Map node into the PoserSurface Reflection node.  Just remember; you ca'nt have any PoserSurface Diffuse Value, you need to apply this to each figure, and only it will reflect in the Figure, but that you wo'nt need the Raytracing Render Setting.

FYI - alot of people put a Sphere node between PoserSurface and the Image_Map.