The laser will never actually bounce off a mirror in the carrara ray tracer. A ray tracer has to support caustics and backwards ray tracing in order to make that work. I know the effect seems trivial, but it is actually very costly to implement. So you'll probably have to fake it. A good way to do so would be to simply place another light at the reflection point and do it manually. Brian Retford Carrara Extensions www.losthorizonsoftware.com