If you have updated to the Windows 7 operating system, and have found that everything works correctly, you may have realized that your webcam doesn't work. What has happened?
Probably, without realizing, you have deleted a file necessary for it to work, and now when you connect to your webcam you just get a blank screen which shows you nothing. To solve this problem you have Bison Cam, a small driver that allows you to use your webcam with Windows 7.
The procedure to use Bison Cam is really simple. First you have to decompress the download file (RAR) and run the camara.reg file, restart your PC and run the setup.exe file in the BisonCam folder. When you restart your PC again you will see that your webcam now works.