I can develop the above for your using AS3 and XML. Let me build you a banner engine that can be configured using XML, and that way, banner images can be loaded dynamically, and even, if required, remotely.
You'll be able to specify which images to display, their time to display, ordering, as well as text to overlay and where to hyperlink to.
We can even investigate configurable transition effects at a later stage if you'd like.