Help getting online.

Hey all just wondering how do i get online?

Do i need punkbuster?
I just downlaoded and installed the game?...

Do i need to patch the game?

Thanks

punkbuster should have come with the game also did u buy it if soo u can go on most servers but if not u have to stay to cracked servers, pm me if u didnt buy it ill find the list of all cracked servers for u