Unfortunately, he didn't say anything about his set up. Is he using an environment sphere, like BB's free sphere?  Has he remembered to make sure that only the environment sphere is a light emitter (I say this, because this was my own stupid problem, I forgot to uncheck that little box for light emitter on my ID Cove backdrop). Has he got too many lights in his scene? I usually work with only two, a main light and a rim light.

"A lonely climber walks a tightrope to where dreams are born and never die!" - Billy Thorpe, song: Edge of Madness, album: East of Eden's Gate

Weapons of choice:

Poser Pro 2012, SR2, Paintshop Pro 8