Facebook App + PHP/MySQL Developer

Hi, I need someone who can take an exisitng freelance based script similar to the scriptlance type scriptsa and then customize it implementing my design. The programming will be simpler than what is there in most sites, I don't need a complex system but I preferably would like Facebook connect built into the site as we will create a Facebook app that will work with the site. The app is a freelance app for users to post their skills to their profile and invite their friends to display their skills. Please know all of the ins and out of facebook apps and how to even allow users to "donate a status".