custom affiliate program needed

i need a cross between a membership management program and an affiliate program. I have a site in which, members sign up (for a price) then get others to sign up (and get paid a commission for that sale). Also, my site has my own affiliate links everywhere. I will need a way for me to track which members click on which links, (so they can get partial credit for their own sale) I will need the program to be able to list all my members, and be able to sort them several ways (ie, top comission earners, date enrolled, current commission balance. etc...) I will need basically all the automatic functions of a member management program, and the tracking capabilities of affiliate programs. hopefully there is a program like this already, if you could suggest it, it would be most appreciated.