I'm having a problem using my creative usb webcam's microphone. The webcam works fine, but I get no sound. When I was using ubuntu, I would change the sound input by going to the volume applet > sound preferences > input > choose a device for sound input > Creative VF0420 Live! Cam Vista IM.
Of course LXDE doesn't have this sound preferences, so I tried alsamixer, but at this point I'm lost and out of my depth.
Here is a screenshot of alsamixer:

There is an item (currently highlighted in red) for mic select. What does this do?
Also, if I press f6 to select sound card, the I get the blue window you can see in the center of the screenshot. But if I then select the VF0420, alsamixer goes blank and I get: "This sound device does not have any controls."
What now? Can I solve this via alsamixer? Or should I try to install something from gnome, to solve this?
Can someone help me? I need to make a skype phonecall, and I can't. Help is much appreciated.