First ; a monitor calibration.

Second ; In the Render Settings, Preview tab, set texture display at 4096 (default is 512) lower rigth corner.

Third, allways use BB's sphere and ONE single Infinite light at 80%

Start from there and build up.

You say PP2012?
IDL, Gamma correction, and SSS bring a complete new meaning to the word LIGHT.

Light is Light, and there is only ONE sun.
IDL, Gamma And SSS do most of the rest.

Only add a fill light at 10-20% max in a emergency. (a real one)
Inside a room it is often more productive to put a light ambient on the walls and ceiling.
Also; Use the ambient node to make Candles, Lightbulbs, TV screens, PC screens or any other light emittor,  emit light as they do in real life.

Forget; and throw all Lightsets made, and or sold, or bought, before Poser8 in the trash can.
They only make your head go Banana's.
Happy Posering
Tony

Poser 1, 2, 3, 4, 5, 7, P8 and PPro2010, P9 and PP2012, P10 and PP2014 Game Dev
"Do not drive faster then your angel can fly"!