Many thanks, Quqxo, I shall try that.
I did spend all Thursday evening going around the help system but your advice guides me a step further on.
I will explain what happened.
I am a woman of 68, an artist, totally non tech. My son (now somewhere on an island off the coast of America) set up my hotmail for me five years ago when I first got my PC. I think I can vaguely remember him asking me what my favourite meal was... but I haven't the foggiest idea what I said and didn't really understand the importance of remembering it. I wish the question had been something unforgetable...like birthplace for instance.
Then, about a month ago I was persuaded, for security reasons, to change my password... and didn't write it down. Yes, now I can see the stupidity of that!
Neither did I set up an alternative address, because no-one told me I should.
I had/have no idea how the internet works...just regard it as some esoteric miracle that is a constant wonder and delight ...until now... when just as I was sending an email to a friend it sprang up and demanded questions I couldn't answer... and became a nightmare.
So much of my life is recorded there.