@ Gator762 : That is indeed the way to go.

And as BB stated in another post, do not be afraid to cranck the IDL up on the sphere.
It has to be high, as the light comes from the outside through the windows.

@Joepublic.

While your renders are nice, and I like them, remember :

On an overcast day with NO direct sunlight, Chrome does not do its bling-bling thing, and slowly fades to grey.
It still reflects, but the flashy "bling-bling" is gone on a dark overcast day.

Light? ?
Ha-yes, a never ending story, but the Poser IDL calculations seem about right.

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"!