Also, intro's and outro's can be played in online mp games can't they?
AFAIK, no they can't.
But to trigger your camera, you would place a trigger, for Intros/outros you would have the condition TRUE
and in activation: this exec "camera.sqs" obviously camera is switched with the name of your script
for cutscene's in the mission you need to change the condition to whatever is going to cause the cutscene
I would suggest you look around the Ed. depot, there are loads of tuts there, it wont take long to learn everything.
also there is about a 4 or 5 page thread in this board about camera scripting, so if you havent looked there, its probably a good idea
ex. East Present
this exec "camera.sqs"