My webcam microsoft vx-500 is not working..what will i do to use this webcam ??

Hi there,
You can download the drivers for the webcam from the links mentioned below
Windows XP (32 Bit) LifeCam 3.5 32-bit for Windows XP SP2 or higher (excluding 64-bit)
Windows XP (64 Bit)
LifeCam 2.04 for Windows XP 64-bit
Windows Vista (32 & 64 Bit) LifeCam 3.5 32-bit and 64-bit for Windows Vista
Windows 7 (32 & 64 Bit) LifeCam 3.5 32-bit and 64-bit for Windows 7
Simply download the driver and run the setup it will install your camera, if it does not detect the camera , disconnect the camera and plug in again and it will load the drivers
If you require more assistance regarding this, feel free to contact
regards, BA