Another possibility is to go to Rdna  (runtimedna )   and have a look at their  "Render Studio"  for Poser. 
Costs $ but will give great results even if you don't understand a lot about the theory of lighting
AND will help you actually learn about lighting as well.

Comes with good tutes  and the forum for it is helpful people too.

" Try and be nice to people, avoid eating fat, read a good book every now and then, get some walking in, and try and live together in peace and harmony with people of all creeds and nations."
-Monty Python