first you have to create a new quest in the GECK (watch a different tutorial for that) if you want a script to run while the player is doing something else, or the player should not be bothered to do something for the script to start, the Quest-Script is your friend even if your script seems to be pretty good, the game-engine will most likely cause some problems, it is not the smartest you should check those websites for functions you could use in your script first, BEFORE you start scripting the actual script (this step often saves you a lot of time) there is a FOSE-documentation on the web: link there is a website about FO3 scripting right here
So if you are new to scripting you should know a few things first:
