Customisable scroller

Hi,

I am looking for a custom (reusable) flash scroller. I need the size and width to be set externally text file or javascript. The content needs to be pulled in from an external text file.

If someone has created a good widget I would be happy to pay or donate a small fee. It does not have to be a free example as it would save me a bit of time developing it from scratch.

Thanks.