BB's dome is what makes the IDL work miracles on this scene... It's not the simple render you state it is above.  I compared it to one rendered with the regular firefly scheme and it's literally day and night.

Yes, I'm running XP 64. IT is the 64 bit render engine that is making the difference.

I've tried about a dozen renders this evening, of varying size and complexity, and they all render at about 1/4 the time required in Poser 8. I'm REALLY impressed with the speed and quality!