Control the timeline of a MC from a drag-able MC

Hi
I'm not sure my last post made much sence so here it is again in more detail.

I need a script that allows the user to control the timeline of a MC from a drag-able MC.

Basically I want a MC that drags is constrained to the x position with a limited movement of say 100 Pixels, as the drag MC is moved along it controls the play position of a tween in a different MC.
So when you push the Drag MC back and forth it moves the second MC play position back and forth.

a great example of this is at http://fable.lionhead.com/fable.html
on the pop up book parts