You see, it's not that easy. Judging by what I have read your seemingly using RPG Maker 2000/2003. These programs do not support Scripts like RPG Maker XP and thus you have to make everything from Events. That is nothing simple, either, and takes effort and a great deal of time to prepare. You also need a great knowledge on the Maker and how everything works.
However, with RPG Maker XP it is easier: all you have to do is insert a script into the Scipt Menu after finding the corresponding one.