I set the skydome to 5 to get that shadow. The strange glow will be the sss in Andy's material. I will try with a V4 render tonight.

If the floor is polished? One trick I sometimes do is to insert a specular only point light into the scene, this will give extra interest/form to the scene without washing out the overall light effect.

 aRtBee - I had to set the IDL levels very high to get decent shadows, not sure about the bounces

hborre's comment is about dynamic range, the way photographer's increase the dynamic range is to use HDR and tone mapping. Possibly the HDR and tone mapping options in Poser will help if you  need to increase the light levels outside.