Hey Yvesjaye,
Sure, I'm attaching a couple of screenshots of a potential set-up.
I've used a free JPG of a starry night sky and I've put that bitmap into a Corona Light material and applied it to the ceiling. Now because the map is 8bit you can start running into limitations when you tune up the intensity - If you want it to light up your interior you'll probably end up adjusting the intensity to be higher.
Then, in my opinion, you are faced with at least two options:
A) Place a Corona Light just underneath the ceiling, match its color to the starry night sky bitmap a bit and disable it from being seen directly, in reflections and in refractions. Also disable it's ability to occlude other lights. That'll create an effect that will look like the starry night sky ceiling is outputting more light than it actually is while in fact there's an invisible light there now doing all that grunt work. (Example: "Starry Ceiling with an additional extra light.png")
B) Either find a cool HDR image of a starry night sky or do some Photoshop magic with layering and masking. You can do that in 3ds Max as well imho where you try and isolate the stars (bright spots) from the background using the Composite map and then just up the star's intensity instead of upping the intensity of the rest of the image as well. It's a bit more of an advanced technique I suppose.
I'm pretty sure our resourceful users could think of even different ways of doing the same thing. Hopefully though, at least that option A I've listed above is of any use to you :)
Oh and as far as the rail light goes, its just a Corona Light Material applied to a spline / cylinder.
