Holy cow that was quick...uhh...I'll do this first-come first-served basis.
For those wondering:
I'm looking to hack up the connector to allow using my own microphone/headset combo. In this instance I've got an Icemat Audio Siberia headset I wanted to use.
I'm also looking at making a second one that's an adapter to allow you to use your own combo headset/mic (single plug) on the 360 controller.