How do I configure Affiliates with Contact Form 7

Hi,

I have a Contact Form 7 installed on my website http://visiongolden.com/order

When my customers submit the form they are redirected to Paypal payment page.

I’d like to create an affiliate program to reward my affiliates for every visitors who proceeded with payment. How do I do that?

I’m completely stuck now, I’ve checked all the available documentation and forums.

Thank you.