Ok i just recently bought a new headset mic. It was about 15 bucks so i wasn't thinking it was going to be all that great, but it doesn't pick up any sound at all. It didn't come with any software to install and my computer has it under my hardware list. The volume of the mic is all the way up and my room is almost completely quiet. Any thoughts as to what I'm doing wrong? P.S. The model is Cyber Acoustics AC-840 Mono USB headset.