Box or Point light

[FlawlessHappiness]

You know i use boxlights for making the default light in the map.
When you start a new map it is COMPLETELY dark and that looks unrealistic. Use the boxlight with very low colors to make it dark, but still see-through-able.
Pointlight, if something gives extra light to the map (Lamps, etc.)
or if the player must be able to see a little bit more.

The light-blending of the pointlights can be fixed. Just mess with it.

INFO:
The pointlight gives most light if it is in the middle of the Y in the room.
Ex. Floor = 0, Ceiling = 4, pointlight = 2
If you but the pointlight at the floor the light amount it gives will be smaller, but it will still be there.

Mess around with the position of the point-light, and the colors.