Flash Platform Game - Scrolling

Hello all;

I need to be able to use Action Script to make a scrolling background for a platform flash game I am making. Currently, I have 2 layers. One called background with all my objects on it, and one with my character on it. What I need is for when the character hits near the edge of the wall, the background will move along with it.

I have found the following tutorial, and it is what I want, but the tutorial does not have enough information to complete it.
Link: http://www.how2flash.com/tutorials/sGame/

What would I use to make it a scrolling background like that with my current setup?

Thanks.