I used the atmosphere to do this. But the more lights you have, the more difficult it will render. My version only has to 2 lights (for the green lights, because the render used more lights) I placed the first light, then load the second. Instead of placing manually the second light, i made ctrl-c on the first light and ctrl-v on the second. And then changed the second light rotation. Last but not least: with Poser5 (and Poser4 ?), you can change the maximum of each value. Giving the value 180 to angle_start and angle_end will create something like a point light (the trick is from Ynsaen, if i remember well) And another trick to reduce the difficulty is to decrease the map size of the light you use (as it is for a "big" scene, a low value should be enough. Hope it helps.