Hi. I just bought a new headset that comes with a microphone attached to the headset near the earphones. There are 2 plugs that come out of each ear phone, but I don't know which one goes into the microphone input on my computer, or which one goes into the speaker. Or am I wrong? Please help, one of the wire plug things is red, the other is black. I want to be able to use my microphone as well as headphone at the same time.