Timed Scrolling Text Field (non-dynamic)

Greetings one and all. I need to create a scrolling text field on a flash page for a piece of animation but it is NOT interactive. In other words, the movie starts and I want the scroll to happen on its own with a scroll bar on the side showing progress. Is there an easy way to do this or do I have to fake it just timing a button’s movement to coincide with masked text in my text box? Would be very grateful for an help anyone can give.

PS: Go BoSox!