"f your prepared to name your cubes SpotlightNN or PointlightNN (where NN = 01 thru 99)." thats exactly the idea I was thinking of for that part.. "Will the cubes be in a seperately loaded OBJ file (one group per cube) or part of the environment object (again on group per cube) or something else ?" was thinking 1 OBJ with each Cube as a group "There will need to be some convention to determine the spotlight direction if you expect that to be set automatically (perhaps another cube called SpotlightTargetNN)." Had'nt thought of that LOL.. but that sounds like a good idea.. not DIP!!!