Expanding movie clip or padding

[color=black][font=Arial]Would anyone know how I could expand a movie clip in width dynamicly.[/font][/color]
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[color=black][font=Arial]The clip containes a text field, the text field is populated from an XML file and so the text will vary in length, the clip has a background color and there is a sertain amount of space from the edge of the clip to the text.[/font][/color]
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[color=black][font=Arial]well it should be a bit like padding in HTML…[/font][/color]
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[color=black][font=Arial]I tryed a few ways but dont work…[/font][/color]