Develop A Website Application

The application is of two face: a. Admin Side b. User's side I sell admission cards. The admission cards are contain serial and pin numbers. When customers buy them, they use their card to gain admissions from a respective school. The pin numbers and serial numbers are used to register on a school website to gain admission. I need a web application which I will load my serial numbers and pin numbers with the type of admission card so that my customers will register in my site and purchase the card. When they purchase the card, the serial number and pin will be sent as sms and also email to the customer and also keep the record of the card bought in the clients account. More over the same web application can allow the registered client to send an sms message to his or her friends too. Please show me a demo. Thank you.