Nice hound - I want one! Tip for radial lights - if you're looking just to light the foreground use ranged lights instead of linear or squared or whatever. Bryce won't calculate beyond that range and if you've got a complex background it can speed up rendering by 5 or 10X, and much more if you've got fog or glass in the background. To see how far the range extends, just up the intensity to 100 (or some large value) and check out where the white boundary is, then set the intensity back to whatever level you're working with.