THanks guys, I got mental ray 1.5.1, I'm having trouble with GI/FG, do you guys recommend any sites that explain particularly using Spot Lights w/ either raytrace or depthmapping during mental ray? The main problem I'm having, is that my spot light is not being deflected by the outer wall, causing all of the light to shine through, I have raytracing turned on for mental ray. Please help!! -flipfl0p