i have a webcam (genius videocam live). I want to use it, but i failed to open video channel using pwlib. Can anyone show me how to implement ? and show me demo code?

When i using pwlib to list the video device:
+Microsoft WDM Image Capture (Win32)
+Frame test N.0 - Moving blocks
+Frame test N.1 - Moving line
+Frame test N.2 - Bouncing boxes
+Frame test N.5 - Text video

But in the list device of M$ Windows is:
+Genius VideoCAM live SC
+Genius VideoCAM live VC