No Supported Webcam Driver Detected. Please Install Webcam Driver Dell Webcam Center Does Not Recognize My Webcam!?

Dell Webcam Center Does Not Recognize My Webcam!? - no supported webcam driver detected. please install webcam driver

I have just the Dell Webcam Center, and is already available. In the PC with Windows XP and I installed a webcam (Labtec Webcam) not built in a ban. This message will always says "Unsupported WebCam driver detected. Please install the webcam driver with Resource CD and launch the Dell Webcam Center again" Can someone help me, if you please?