[ubuntu] Help using getting my headset microphone needed

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http://ubuntuforums.org – I have a thinkpad t410 with a combo headset/mic jack (just one for both) but can not seem to get ubuntu to use my headset microphone. The internal microphone works fine..in fact, when I plug in my headset the audio comes through the headset but the microphone is actually the internal mic not the ones from the headset. I have checked my sound preferences and only have one option of device to choose for input: "internal Audio Analog Stereo" my hardware tab only lists various output names except one entry which is actually what is selected: "Analog Stereo Duplex" Does an (Hardware)