Diet application for joomla (reposted)

I need a diet for joomla application to sell a diet in [login to view URL] 1. First the user input his weight, height, age. 2. Then the site shows a graphic and allocate the user in it and offers a diet 3. When the user purchase the diet is able to enter to its account and have accesss to its own content, a customized diet. 4. An example of this functions is [login to view URL] I need the development in Java and/or php, nothing in flash.... no design needee... and in one week...