Web Based Billing, Inventroy tracking and distributor commission program

We are a pre paid calling card company that sells calling cards and other products to retail outlets and through distributors. We are billed from our vendors when the product is actually used, not just sold, for some products and for some other vendors we are billed when the product is sold. All of our products have a tracking number or bar code for tracking purposes so that we know if card range 1001-2000 is sent to Distributor A and card range 2001-3000 is at convenience store B, etc. Here is part of the problem: Our point of sale activation company bills us when the card is run through the cash register for activation and the long distance carrier charges us when the card is actually used. We need to develop a program that will track both and bill the appropriate store or distributor. By setting up a web-based "back room" support system we can not only bill the location or distributor for sales but can offer our distributors a method to bill their customers too. The second part of this is what I will call a sub-distributor tracking program...we have some associations that refer business to us and we pay them a percentage of sales for those customers. We need a method to track those sales. ## Deliverables 1) Complete and fully-functional working program(s) in executable form as well as complete source code of all work done. 2) Installation package that will install the software (in ready-to-run condition) on the platform(s) specified in this bid request. 3) Complete ownership and distribution copyrights to all work purchased. ## Platform Once we make the decision on who to use we would like to discuss the different options available to us regarding platforms, etc.