Thank you guys for your responses. I was hoping that there was a way of configuring the audio settings within the computer. I seem to remember that when I initialy installed Skype I was given the option of sending voice to the loudspeakers and muting the headset:which I did. I now wish to reverse the option but it seems from your postings that this is not now possible?
Thank you all for your advice. I have managed to sus-out the settings that I want. After configuring the Audio settings in Control Panel on the computer and testing it in Skype by using the test call. Open Skype (if it is not still open) and go to Tools> Options and adjust the Audio and then the Sound panels so as to allow the incomong Skype calls to play through the headset and at the same time one can play discs etc. through the loudspeakers on the computer. At the same time ones left foot can be cracking walnuts (you see you have to eat-with apologies to Jimmy Durante)