dear Dave R
thank you very much
the thing is when i search for component ,or 3d warehouse object i get some very nice rendrs with the su file , any light source , ie spot lights etc in the render produce a very nice light distribution when inspect the light unit i find a circle in the component named light _base i presume it is creating the proper light effect .
the attached pic show this matter

Hi , I'm to this forum

Can anybody please tell me what program or plugin is used to create the " Light_base" component, cause I`ve been searching everywhere with no luck, many thanks