Simple Facebook App: giveaway with poll

I need a simple Facebook application: user collects points in a giveaway competition. Application is divided in tabs. - user adds application and is entered in a giveaway competition - user should see how much points he has at the header of the application (above tabs) - first tab lists functions for a user (take a survey, provide e-mail, invite friends, see prizes) - sidebar of the application: rank among friends (all the friends, entered in competition, with their points) - 4 questions survey, everyone that fills out the survey, receives 10 points (survey opens in a second tab) - providing e-mail address gives a user 20 additional points - option to invite friends: each invited friend gives additional 10 points (friends invite form opens in third tab) - prizes information (opens in forth tab) - application will post a message with picture and text on user's wall, each time user opens the application - application will get just the basic information about the user - aplication will be hosted on my server - all data will be stored in a CSV format Since I am a web designer & programmer, I should be able to change design of the application myself, together with poll questions. I just need the basic structure & integration on Facebook. Your own suggestions for design are also welcomed. PHP is preferred, but not a must.