I need a small program to manage a referral program that I want to implement in my store. The goal is that the clients reffer some other clients and when they hit a certain amount of referrals, the win a prize or cash or something. The system must produce some reports or flags that teels me if someone is trying to trick me (ex. recurrent address, zip codes and other techniques to stop or minimize a fraud). This system is the phase one of the project and should cost the minimum in order to see if it's work in the real environment. In the future, one of the upgrades should be the management using a Website but this may be part of another project. Now I need the basic.