Draggable slider bar

I’m trying to get this draggable horizontal scrollbar to work. Basically, I’m going to load an external swf into a local movie clip and I want the scrollbar to track progress. The user should be able to move the drag bar and jog the movie to the relative position.

The first step is to get the scroll bar to move in sync with the MC progress. In my file, open the scrollbar movie at the bottom of the black area to see what I’ve done.

Any help would be appreciated.
I’ve also got code scattered all over, I just don’t get how to make everything work in relation to each other.