These images show the avatar sitting on my sculptie chair and an image of the completed lounge area.  In the picture below the light and light switch can b seen.  While I understood how to make a prim cast light I had difficulty finding a script that would allow the light to be turned on and off.... The light I created is, I think, created around a "glow" rather than a light.  The light switch successfully worked though and the glowing sphere does cast a light when turned on.