Reseller's commission and management tools

Hello All...
We have website that sells products and services with e-commerce
functions that allow to automatically process customer's orders,
create customer database, etc. I need an advise on the best software
or/and a template with open source code to use for further development
of a website that would allow re-sellers to sell our products and
services that includes such functions as sign-up, log-in, assigning
re-seller codes or numbers, commissions calculation, incentive
programs, access to re-sellers accounts, etc. I'm not talking about
banner linking affiliate programs. We would like to get something with
as many preset features as possible so we can customize and expand them
in the future. Not even sure if such product exists. Any advise will be
greatly appreciated.


Thanks, Kyle
kyle@2nikon.net