hi guys, i recently purchased an official xbox 360 headset which i cannot seem to get working correctly, firstly i turned on battlefield bad company and joined some other people on xbox live succssfully, then i plugged the headset into 1 of my controllers however i cannot hear anybody talking in the game through my headset earphone but i can hear them through my T.V also nobody can hear me speaking although the headset is connected properly, now at first i thought it may be a faulty joypad so i tried it with my other joypad and its just the same, however i doubt it is a faulty headset as i had bought it brand new from game? am i just setting this up wrong is there something else i need to do in the settings or something?? any help would be much appreciated, P.S sorry for any bad spelling as i am pretty drunk right now lol Thanks
it did not come with the 360 i bought it seperate with a camera just yesterday.

is it the headset tht came with the 360 or a uncord headsit it depends but go to a video game store and ask a worker