Thanks for the information and quick replies.  

Two different opinions regarding the use of lighting,but I think I get the gist. I was actually trying to apply the inverse square law and the use of reflection. Good to know.

I get the impression then that the possibilities are there, but its a matter of experience.

Also, along the issue of lighting, given that "real world" rules don't completely apply, is it a good idea then to get some of the lighting packs that are around?