Hi Dieter, The following will reveal that I'm still in the early stages. You mentioned preferring Lightworks... Is this RenderWorks or a particular function within RenderWorks?
I've been fiddling around with LightWorks RayMaker, which I assumed was, somehow, RenderWorks... under View/Rendering. At least I'm able to get point(s) of light and sunlight to work. This seems just fine for basic lightbulbs in my concrete bunker renders at this point.
Almost every day, I find myself delighted that I never bought any of that Autodesk junk, except for a couple of books. And, I bet it just gets better...