i bought a new dualshock sixaxis ps3 controller yesterday. i have 2 controllers already and didnt have a problem pairing them with ps3. for some reason though, it wont pair with my ps3. i dont know what to do. i plug it into the usb cord and all my controller does is flash. i hit the ps button and nothing happens. i feel so stupid that i cant get it to pair. can you please help?