Attitude aside, the screw you're looking for is indeed on the throttle body. Look, I even lifted a picture off ebay and drew on it for you. The circle is the screw that sticks out from the body to control how much air enters at idle (your foot ain't on the pedal). The arrow indicates where the screw is. Its a torx T10 or 15, I don't remember. Hope that helped you out.
http://www.morpfhine.com/throt.jpg