I need something ready made so I can let people put a code on their site, and show my banners. Then I can give them rates etc, if you get what i mean.
I'm not quite sure I understand what you mean... You could try www.hotscripts.com though.. Might be something there that does what you need.
Ok, you need a ad management system, where ppl come and register and get a code, they place that code on their sites and you will track how much traffic they generate for you, Am I right?