Timer controlled movie clips

Hey folks,

I have a movie clip that I want to play every 30-45 seconds. Basically it will start, run through the movie clip and stop and wait 30-45 seconds before it starts again.

Can anyone point me to a tutorial or know how to write a script to do this. I looked some stuff up but am having trouble coming up with a solution. The name of the movie clip is: lights_mc

Thanks a lot! :hr: