James B. Byrne wrote:
Skype runs and the integrated usb video and microphone both work (I infer this from the mic test in Skype options showing movement on the intensity bar as I can hear nothing).
Have you looked at the Wiki page on Skype at http://wiki.centos.org/HowTos/Skype ?
Have you tried running alsamixer in a terminal and checking that all the options and volumes are correct? For me, by default, the volume on the USB headset was zero.
Yves Bellefeuille