OP,

Don't listen to anyone who says it can't be done. IT CAN BE DONE, unfortunatelY I can't share the workflow because my boss wants to sell it instead of give it out for free.

The problem is that it took me SEVEN days of research.  Seven day learning curve for something that should of been ready to go when you first purchase Poser Pro.

The OP is 100% right. Smith Micro failed by not offering a simple IDL lighting solution for the most basic of scenes. Outdoor (day, night), Indoor (day, night). 

But trust me, it can be done.