I was wondering if anyone could tell me how to modify this script found in the Script Archive under banners. I would like to use it as a header instead and make it the full width of the page and be able to insert other html code within it. Or maybe someone could tell me where to find a script that would do this.

i'm not quite sure what you are talking about, but i do suggest you open a support ticket with bravenet. they will surely beable to help you