A TRIGGER problem

Ok I need help with some triggers that I am working on.
1: The problem is that I can't figure out how to make a trigger that makes creatures apear wear a unit dies that was not origanally on the map.
2: I know that this is probaly something easy but I am still a small noob, but haw do I make a trigger only happen at night.
3: This question doesn't have to be answered but how do you make a cinema.

THANK YOU FOR THE HELP.

EHEM this is not the right forum man

go to the Trigger Forum

1. Unit - Create Units facing angle

2. Add this to conditions:
[Real Comparison] (Game - Time of day) less than 6.00
[Real Comparison] (Game - Time of day) greater than or equal 18.00