Hi, I just bought a new Logitech headset with microphone for my Macbook Pro as the internal mic is naff. I have plugged it in but cannot for the life of me getting it working. After snooping around it seems that microphones won't work in the Line-In port on the Macbook pro as its not the same kind of thing as on a PC (the mic works fine on my PC). It seems I need either a USB mic, or a Griffin iMic to convert it into a USB mic? Is this true? What a stupid thing for Apple to do.