Hi all, I've got a set of Sennheiser PC350s which I've hooked up to an x-box with the various apaptors. The audio is fine (superb even) but now I want to be able to use the microphone on the headset for chat. Can I plug the microphone 3.5mm jack into the USB port on the x-box with an adaptor? Has anyone tried this and does it work? Cheers in advance.