http://www.toomuchmedia.com/products/nats/modules.html
nats has the module that is plug and play. Its called BYOA (Build Your Own Anything) Module.
The Build Your Own Anything (BYOA) module from Too Much Media allows your NATS affiliates to build their own tours and advertising tools for inclusion in your affiliate program. They can create site tours, banners, hosted galleries, and full and half page ads for any of your sites. You can pay the affilaite who created the ad tool or tour a comission on all sales that tool generates. For instance you could pay a bonus of $1 per sale for each sale a tour they have created generates or 50 cents for each sale other affiliates sent using a banner they created.
Price: $1000 one time charge or lease for $50 per month