How long is does it take to download a Game?(DOA2)

umm i was wondering how long it takes to download a game and the game that im DL is Dead or Alive 2 and im downloading it right now...
i was wondering if there was different parts to it like when i DL it says Utp-DOA2.R00 ... and its 14.3Mb and the next thing is Utp-DOA2.R01 .. etc .. but they all say that its 14.3MB do i download them all or is that it ?.. please help thanx~!