Web based MLM (Multi Level Marketing ) Software

For my client, who are into MLM ( Multi Level Marketing ) based business, I need to develop a web based software in PHP/MySQL which will calculate the commission payable to each Sales Agent (Member) every month. We will integrate this application with the site that we are developing ourself for the client so you do not have to bother about site designing part. We just need to code from you. Brief Note : 1> Every level can have unlimited members, vertical & horizontal 2> Company should be able to change commission structure payable to members anytime from admin interface 3> Beyond the 5th level above there won't be any commission payable to members 4> Every member should be able to view the member tree and the total sales made by each member from whom he supposed to receive commission 5> Every agent should be able to view the record of commission paid to them by the company. 6> We will provide you two tables, one holds member list and the another table for payment records. Do write if you have any specific queries or need any clarification on the project. People who bid randomly on projects without reading / understanding the project are requested not to bid here and not to waste our time. Only serious companies / freelancers should quote who developed such applications before or confident of doing the work..