The only way you can change it is by having a new user and signing up for playstation network and creating new online account but you will need to have a new email address. (p.s. you will lose all your game data if you start a new account as all your data will only be saved under that user. You will still have all photos, music and videos though).
Your data from the other user account will not be lost. You can simply copy all your gave save to the other account.
Once you choose it you cant change it unless you make another profile
well, you can if you change your e-mail address to something else (you would need to know the password) then i think you can change it.
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if you have yourself or some guy as ur online id it will come up on mw2 or black ops .... you were shot by yourself or some guy
Some PS3 games have online play. When you own the game, have an online connection, and the game disc is in the machine you can play online
Some PS3 games have online play. When you own the game, have an online connection, and the game disc is in the machine you can play online
To go and play online on your PS3 is free. The exception of course is that you do of course have to pay for an internet connection. Also certain online services on PS3 do cost money, such as netflix.
There is no two player online for mw2 on ps3 or xbox 360