OK try to download latest version of skype:
available at :
http://www.skype.com/intl/en/download/skype/windows/?c=101After the download you can configure like this:
1.Start Skype.
2.On the 'Tools' menu, click 'Options'.
3.In the navigation pane of the Skype 'Options' window, click 'Audio Settings'
4.Run down the list setting your defaults
5.Select your webcam as the default microphone.
6.Make a free test call
7.Click 'Save'
8.In the navigation pane of the Skype Options window, click Video Settings.
9.This will launch your webcam
10.Adjust quality of picture in 'Settings'
11.Check the correct webcam is shown as default
12.Click Save
13.Test your webcam by making a Skype test call.
If you need more information about how to configure Skype please visit the following Skype Web site:
(http://support.skype.com)
ok
Regards
Uttam