Advertising system - like openx, exoclick

We need create a advertising system based on Django web framework. The system should be similar to projects openx or [login to view URL], there is not need place ads related to page content. The system must support PPC and impressions. The system must provide several ad formats (banner, text, popunder, etc.) and should be possible to add a new format to system. The project must contain: - advertiser section - publisher section - admin section each section should contain graphs showing how many credits remains and number of click or impressions. The system must contain preparation for payment gateway and should have one example gateway implemented. The design can be similar like this [login to view URL] More details can be discussed later but best specimen is [login to view URL], please check this site.