The headset seems to be working properly, otherwise it wouldn't work with the other programs. It sounds like a configuration issue. Do you have it configured as the default device in the SKYPE program? If you haven't, you may want to see if it is recognized as a choice by SKYPE so that you can select it within the program. In the SKYPE program, you just go into "tools", then "options", then "audio settings", and just make your selection from the drop down box.
Hope this helps from Headsets Direct