banner rotation setup

I have an existing website and would like someone to set any basic banner rotation script they are familiar with. Must be user friendly and I must see a working demo of the product and possible look at the admin interface for it. I don't need anything super extravagant or fancy...I just need to rotate banners inside a message board (phpbb) header. I have used ShowSell in the past and it worked nice, but I don't have any support for it.