Custom scrollbar for dynamic text

I need to create a custom scrollbar for a dynamic text box that I am using. In Flash MX and earlier, there used to be the Flash UI Compnents folder in the Library and you could modify the individual parts of the Scrollbar. how is this done in MX 2004 or Flash 8? Or if anyone has a good tutorial for a custom text scroller. I have looked and can’t find much for The newer versions of Flash.

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