Here is some great info on setting up an affiliate program for your product or service.

To get your product in front of a lot of web surfers you need to make your product accessable to people that are interested in making money from your products. For example. Sign up at PayDotCom.com and list your product or service, then advertisers that already have websites may take on selling your products by pasting advertising materials available from the site an making a commision off the tracking code applied to your unique web address you generate from the site. If any customer orders through this affiliate link, the owner of the product gets paid and so does the affiliate that posted the link.