Need website scripts

Hello Forum,

This is my first post

Anyway could someone please help me find or create website scripts similar to this website http://www.microsoft-points.com

I would like the scripts to a website where users must refer a certain number of people before being able to access the site fully

any help would be greatly appreciated and I will try to return the favour in anyway possible

For more info or to contact me just send me a private msg

thanks