For PP2012?
Always render with IDL and Gamma correction ON

NEVER use any AO and avoid IBL like the flue.

For lights?
The BB free sphere that can be downloaded from his site and ONE infinite light at 50%

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"!