Stephen Ray, You may have missed some of my earlier posts here, and on my web site. But the rendering engine will be faster for sure. there is a lot of optimization to be done on the render engine. Its a full ray tracer, which is why it's slow. Also, true global illumination and radiosity won't be that slow, it will be faster than fake radiosity which uses 100's of lights, and I can render images with fake radiosity in a day or two at high resolution. Taerin, Boolean flattening will be provided :) Scott