IT WORKED! When I did it yesterday. It seemed to auto-install the driver and this time I double-clicked and went through installation wizard-so probably didn't even install yesterday. Only thing is as the troubled computer was my primary computer (and I only call it primary as it is my favourite and the one I set up network on originally) I will have to set up wireless network again. It now has gone back to default name of dlink with no security. So, one more question, do I need to uninstall old network details off others computers or, if I use the same config, will it be okay? Also, can you foresee any other issues? Sorry to ask so many questions at once. I have to go to work shortly and I figure that when I come home you will be asleep and this is when I will be sorting myself out, so I am trying to pick your brain in meantime.....
THANK YOU BRONI - I have been struggling with this for days, I am very grateful for your help and so glad I found Computer Hope.