It more about whether the Game has online co-op play. If it does then two players can play online on the same PS3. For most games they are single player and not co-op either online or offline. An example of a game that is able to have both co-op and co-op online play is Resistance 2 see related link
No there isnt, but there is multiplayer online.
no
No two players max from same ps3
Xbox players are unable to play online with PlayStation players because they online play is run through two different domains.
its impossible to do it. to do it you would need two xbox 360s with xbox live its impossible
its two players offline and 4 players online i have coop its sik :D
yes if you are going Co-op and or on Ps3 online or xbox live.
Two players
To play two players on one PS3 you need two controllers. Turn on both controllers. You must be playing a game that supports 2 players to play with two players.
You can not play two players online on cod4, it is one player only, the only things you can do with two players is split screen. You could make another user on your ps3 and let one person play on that account and another on a different account
Yes you can on split screen
Whether the PS3's are located in the same house does not matter except if your internet speed will not support 2 PS3's in use online at the same time. The PS3's would only be connected online through the PlayStation network for all four people playing the game. The only connection at your house would be that both PS3's are trying to use the same internet connection, which either will support 2 PS3's or can be improved so that it will support 2 PS3's. i am not sure about ps3, but on xbox you can have an oline guest???? not sure if possible on ps3,,,, but you should check!!!!!!!!!!!!!!!!!!!!!!