Hehe! Thanks folks. I'll take the side off the tower and have another look tomorrow. I remember when I had it built that it was not an onboard sound card but obviously today I was looking at the wrong one.
Thanks 'Strawballs', as you can see I've changed my log on name to my real surname rather than the 'nickname' I've carried since 1978. Haycox = Strawballs? get it? Sorry to muscle in the way I did. Anyway I've messed up big time and could still do with some help.
I've got a Netgear FA310TX sound card.
According to this PC, there's no device installed.
I've no idea what to do next, can anyone please advise?