Internal product delivery tracking system with online interface

We need to get a tracking system developed which also has a simple online interface for customers. The purpose would be that participants in a contest will mail (through post) their participation, and we at our end will sort their queries into valid / invalid. Post that, a confirmation email should automatically be sent to the customers along with a tracking ID which they can use to track the status of their participation. People will valid queries will receive a prize through post to their address. There should be one central database for this tracking system. In addition, there will be different views of the database for: 1. Data Entry - This person would input all the information about the customer's participation, including a scan of their physical participation form. There should be mechanism to add this to a central database. 2. Customer - The customer should be able to search for his participation status using his Name / Tracking ID / Pin Code etc. There will be online interface for this tracking. 3. Customer Care - The customer care department should be able to see the status of a particular request similar to the way the customer can see it. In addition, they should also be able to add remarks about their last conversation with the customer. 4. Client - There will be various clients running contests through us. A client should be able to login and see the status of all the different contests being run by him through us. 5. Admin There should be a provision to add certain fields to the database since different clients will require customers to fill out different kinds of information in their participation forms. For every different promotion being run, we should be able to setup different kinds of fields are being captured through the form. The online interface for this tracking system can be very simplistic in nature (Refer [login to view URL] for reference). Please include samples of relevant past work in your bids. Cookie-cutter standardized responses will be ignored. Thanks.