How do i get my webcam with built in microphone to work? when i try to record voice message, it says no sound indicated.....

Not enough information... How does your web-cam connect to your computer (serial/USB/Firwire)? What is your OS (Windows/LInux/OS X)? Does your computer equal or surpass the minimum requirements for the cam as listed on its box? Without knowing these one can only guess at the root of your problem, but if I had to... I would say that the device driver for your web-cam was improperly installed or not installed at all. Try reinstalling the driver from the disc supplied with the cam. First go to the "Device Manager" and delete the old driver and reboot. While the computer is rebooting ensure the disc for your cam is in the drive. When the OS says it has detected a new device, point it to the CD drive. Bobs your uncle... If this doesn't help try looking in the manual for the cam under "Troubleshooting". Sometime the manual is on the CD as well as the driver. Hope this helps.