The webcam mic. prob. won't work because it's through USB, and the game looks for mic.s plugged into an audio in jack. You'll have to get one of those. I have a headset that I use for Counter-Strike...it's awesome
LOL, delete that 2nd post.
Most audio jack mic.s are plug & play, just jack it in and tune it, voila. Audio Tuning Wizard should rather launch automatically, or just do it in UT.