From the Dell Technical Support website:
The Dell Webcam Manager acts as a hub for all of the webcams applications and configuration options. These applications include:

* Webcam Center: Core recording functions of the webcam such as video recording, motion detection and photo capture
* Webcam Console: Configure the webcam's picture quality, face tracking and pan and zoom features as well as special audio and video effects.
* Video Chat: Allows video chat with popular instant messaging applications such as Google Talk, Yahoo! Messenger, and AOL Instant Messenger.
* Live! Cam Avatar: Select avatars for video chat, apply audio filters or use emoticon style emotions with the video avatars.
* Create Avatar: Create a unique avatar using the Live! Cam Avatar Creator software for video chat.

To Access the Dell Webcam Manager:

1. Click the Start button.
2. When the Start menu opens, click the Dell Webcam folder, then click the Dell Webcam Manager icon to open it

Enable the Digital Array Microphone in the Dell Webcam Center by :

1. Click the Start button.
2. When the Start menu opens, click the Dell Webcam folder, then click the Dell Webcam Manager icon to open it.
3. In the Dell Webcam Manager, click the Dell Webcam Center.
4. In the lower right-hand corner of the Dell Webcam Center window, click the drop-down arrow next to Audio Source and click Digital Mic (Realtek High Definition Audio) to enable the microphone.

To troubleshoot issues with integrated webcam and digital array microphone, use the Dell Troubleshooting Wizard: "Problem with the Integrated Web Camera" Friendly ID 297119