affiliates script

I need an affiliate script developed OR installed on one of my websites. It should be functional. You will do whatever necessary to makeit/set it up/install it/make it work on the site (the site only sells 1 product) , and ready to use. I will need to test it to make sure that affiliate script works as it should and that it has been setup correctly. Send the link to the script and demo with login/test details + please tell me what kind of features it has + if it is asingle level affiliates script or if it allows multiple-level affiliates networ/pyramid structure?) MAX $30