facebook login

Hi all, I want to design a networking game
-user login via facebook
-after sucessfull login user enters the game with their own profile picture
-there will be other users inside the at various locations (best example Playstation home)
-users can interact with eachother (such as chat and post to their own wall)

can some one please point me to the right direction to get me started please:-P

Thanks

After about half an hour of searching, I found some solutions.

Sources:
http://forum.unity3d.com/threads/34339-Unity-Facebook-integration
http://forum.unity3d.com/threads/33898-Unity-Facebook-Project

Facebook does have built in support for this I believe, those forum threads should have the answers.

i will do some reading and give it a try thanks again