Facebook integration into website

We are looking for a developer to integrate Facebook connectivity in our website [login to view URL] We want general users (not the paying photographers) to be able to create an account and login using their Facebook account. The Facebook info will populate the registration process; they will need to select a username, because they need a username to be able to access the forums (phpBB forum) We will need to pluck the Facebook info and input it into our database (info includes name, location, Email address, phone number if they have it) So, the two scenarios would be 1. The user has never used or logged into ShutterJobs and has a Facebook account. He/she selects the to login into ShutterJobs with his/her Facebook account, because he/she hasn’t never logged in the login process triggers a script to check for existing account in the ShutterJobs database, finding none it creates one and enters the field required in the ShutterJobs database. 2. The user has used and logged into ShutterJobs and has a Facebook account. He/she select to login into ShutterJobs with his/her Facebook account, because he/she has an account in the ShutterJobs database he/she is able to use Facebook as an authentication process and once inside ShutterJobs it users the ShutterJobs account and not the Facebook account details. The reason is that the forum within ShutterJobs is not able to use the Facebook’s credential for access, however if there is a way for the forum to accept the Facebook as an authority source then we are happy to look into it as an option.