Hi new here, hows it all going? yea im trying to set my PS3 up on net, well i managed to join it up on my wireless net connection. but i want try to play like against other people on games. when i go to multiplayer mode and it joins net connection it says "must be signed into a playstation network"? well i did system update like it said originally. how do i go about this, sorry if its really simple. it is free by the way aint it play like call of duty3 or other games against other people yea?