Only guessing, but you might have seen them in your Network settings if Wireless? Maybe a neighbour or someone nearby taking advantage of your connection. You may need to improve your wireless security to higher than WAP.
Hi all, just been talking to nephew and getting him to try a few things out. It seems that the Dlink dongle will only flash if you 'giggle it about' in either of the USB sockets on the front of the PC.
It was put there because if the dongle is plugged into one of the USB sockets at the rear of the PC it cannot find the signal from the Dlink router hts only about 2 feet away.