A Simple Facebook App Guessing Game

I need a simple facebook application that looks and does basically something like this site shown here: [login to view URL] its needs to have: *Point system with limited points per day *Places winning users on winners "scoreboard" *Ability to invite friends for more points *Paypal/Ad integration *Simple conditional is/else game Most of the artwork is already done for it, so not too much design involved. Its an simple concept and should not take more than 3-5 days to complete. it should be very easy to do.