The Set Up Audio and Video Wizard is part of both the Office Communicator client and the Office Live Meeting client. The wizard walks the user through the process of specifying and configuring a microphone, speakers, and a camera to use for A/V conferencing.
In Office Communicator, you can open the Set Up Audio and Video Wizard from the Toolsmenu under Set Up Audio and Video.
In Office Live Meeting, you can open the Set Up Audio and Video Wizard from the Optionsmenu, under Set Up Audio and Video.