I always put a faint orange/yellow colour to my main spot when working with figures. Poser's lighting is usually several coloured sources whereas bryces basic is white sunlight. I never set the ambience above 8 myself. If you don't have a bump map to use in the bump channel then slimsand at 1 or 2 slider setting and 600 scale will give a similar effect. (only apply it to the skin though -looks wierd on the eye balls!)

Pass no temptation lightly by, for one never knows when it may pass again!