To use squad chat on PS3 simply talk into the mic. Unless you are a leader you can only talk in squad chat. Squad chat is however disabled if no one else in your squad has or is using a mic.
Chat with our AI personalities
playstation eye i'm guessing
No
u can play it on ps3 but you can't use the ps3 controller
Yes, usually an old PS3 disk should work on a new PS3 console.
You use the charging cable to connect the PS3 to Controller and press the Playstation Emblem on the controller