Thanks Dai.
I seem to have done it and managed to connect briefly to my network just to see if it worked which it did.

I was just wondering about the security side of things - it comes with a McAfee free trial but I haven't been asked anything about setting this up yet so am not sure if it's actually running. I know nothing about setting up security in Win7 so would appreciate your advice on this. I'm using and have been very happy with Avast v.6.0.1203 and the XP firewall so would like to ditch McAfee and use similar. How would I do this?
Sincere thanks for all your help!