72101 OSCommerce Addition

Ok ill try to explain this the best i can. We are in need of addition to OSCommerce. users sign up for party part 1. user signs up for a party (kinda like tuppaware but online) 2. given a ID number for that party 3. party only active for 7 days shoppers using party ID number 1. when checkout user will enter party ID number 2. after purchase the person that was issued that party ID number has 10% added to the party account 3. 10% credit is only from the product price. 4. once account = $200+ person with that party ID number gets 10% credit of total of pruchase price 5. credit is valid for price only. no shipping or tax If anyone needs more explaining on how i want this to work use PMB and i will go further into details. This is kinda like a affiliate program but the users sign up for this and it is only valid for 7 days from issue. If they want to get another party ID number they can at any time but may only have one party ID number at a time. If the sales for that party ID number is less them $200 then they get $0. Im here mos tthe time so if you post in the PMB i will get back to you asap so keep a watch if you do post. Thank you in advance for anyone that bids. I will not just select the lowest bid i also want someone that is going to be able to do this from start to finish. Price is a issue but not as much as quality. I would like to see any examples of this kind of work you have done if any. Thank You