Tell-a-friend script + affiliate tracking

Hello. I have very specific needs. I need to create a Tell a friend form that will allow a user to input 1-20 emails depending on their choice (default of 5), and then have a default message be sent to each of the emails. Then I want the default message to contain some text, a link that takes the SENDERS email and makes it an affiliate link to my webpage, so they can make money off their friends. Example Sender email is x@x-com Friend receives email from x@x-com Message to friend should have a link to my website such as www.mywebsite.com/referal=x@x-com Now, if the friend buys, the REFERRING friend receives commission for purchasing. Example in action here [login to view URL] Scroll down to where it says Tell A Friend And Make Money $$$ This is EXACTLY what i want to do, but I dont know how. ---------------------------------- Secondly, I would like the form to then export all emails, senders and referrals, to my mailing list. I use Get Response, If its possible with any other company, i will switch. If not, then i need the emails exported to a text file located on my webserver. ---------------------------- Thirdly I also need help with finding the proper affiliate tracking software to work with the previous script i described. This guy is using a simple method like at his website .... '[login to view URL]@paypalemail-com" What is the tracking system that works with this ?e= function. I appreciate this help.