Animated looping line of text

Hi everyone,

I need to have a message that will positioned at the bottom of my flash movie - just a long line of text that will move in from the right of the movie and disappear on the left as more text comes in from the right. I need this small animation to continually loop. All I’ve done at the moment is typed the line of text in a wide text box but I’m not sure how to animate it. Should I make it a movie clip?

Sorry to be so vague - I’m a bit brain dead this morning so would really appeciate it if someone wouldn’t mind briefly outlining how I’d go about this.

Thanks in advance.