Thanks Mike, I tried the Polygon Cube options, but still same...? I may try re-installing Maya, see if that fixes things. Do you think that may work?

Actually the light type in the lamp above, is a "Point light" I didn't really know which was best to pick, just thought of a bulb and how it emit's in all directions.
Will have a go at the settings you told me about - Thanks..

Regards Scraggy