Your first problem is you are using the poser default lights.  The second "problem" is if you have a light at 100% it is supposed to be bright.  The third problem is those are previews and not an object in a rendered scene; your render settings might also be giving you some grief.  The final problem is there are values on the mat node to control how the lighting models work and you need to tweak them via trial and error.

Anyways, unless we can see your node set up I don't think we can help much.

WARK!

Thus Spoketh Winterclaw: a blog about a Winterclaw who speaks from time to time.

 

(using Poser Pro 2014 SR3, on 64 bit Win 7, poser units are inches.)