|Click the Messenger menu and select My Webcam. The My Webcam window opens. |
On the My Webcam window, click the File menu and select Preferences.
The Yahoo! Messenger Preferences window opens.
For Yahoo! Messenger 9 and older, select Webcam from Category options. For Yahoo! Messenger 10 and newer, select Webcam Broadcast.
Click Camera Source and the Camera Source window opens.
Select the webcam you want to use from the Camera Source pull-down menu, and then click OK.
If this failed please follow this