I was able to pick up your reply this afternoon. Yes, there is the Magic Desktop thing installed and he doesn't know who installed it, maybe his daughter, or maybe if updating Skype. So, your links appear to be very useful
So, I'm now got to uninstall this program but ran out of time this afternoon, so will hopefully manage in the next day or two. I also read that this program can be difficult to uninstall so I'll be Google-ing for that now!
Thanks very much, it seems you've hit the nail on the head, as it were. I'll post back when I've managed to sort it out.