Soccer game in flash

Hi We are a graphics company who have a client interested in creating a soccer viral marketing competition and are looking for a partner to help develop this game / competition. The aim is to create an interactive competition, as a viral e-mailer, which encourages the user to disclose their contact information for the chance of wining a prize. To enter the competition a visitor enters their e-mail address, they are then allowed to select a lucky seat in a football stadium, if they guess the correct seat they win a prize. In order to have another go they must email a couple friends and get them to enter the competition, once this has been done they get another go at selecting a seat. If they get 2/3 additional friends then they can have yet another go. Their fiends then also have the same opportunity to enter again as long as they get two additional friends to enter. Although the game would be fairly simple the system will have to manage the game, access and contacts / winners, it needs allow our client to interrogate / download the contacts database for marketing purposes. Vi design would story board the competition / functionality and supply all the artwork but require the flash files and backend systems created.