Question Author
Thanks, VHG, for that reply. My thinking has been a bit muddled but yes, I do have a router which is wi-fi enabled so thinking about it a bit more, there probably isn't a problem.
I realise that my dongle comment was a bit of a red herring. I only got it because I don't have a wireless card in my PC so the dongle actually is a wireless USB adapter. this is what I used to connect wirelessly when my desktop PC was temporarily relocated.
My daughter's laptop has certainly got a built in wi-fi card.
Two subsidiary questions:
1) If my daughter connects wirelessly to the internet, will I still be able to connect via ethernet - or is it "either / or"?
2) If she brings her iPad, does the same apply?
Thanks again.