Hi all :)
Well, I went. And I have to say, I have never come across a more pleasant or friendlier bunch of people. I arrived through the snow, and there were about ten others there, all far older than me, and every single one came to say hello before we sat down. One of the elders came to say hello, and explained that it would all start when we all sat down, and at the end the elders would shake hands and that notified then end of the period of silence.
No-one said a word for the hour. It is very difficult to empty your mind, and I wasn't sure if that's what I was meant to do, so I decided to think of all the wonderful things that were in my life, and what I have learnt from the not-so-wonderful things. It sound so simple, but it really made a difference to me- As soon as I got in the car afterwards, I wrote down some of my thoughts.
After the meeting we all had a chat and a cup of tea, and everyone was so kind. I spoke to a few people about the impossibility of explaining what being a Quaker means, and that I wasn't sure about Christianity, just that Jesus was a good man. They smiled and said "yes, a lot of us feel like that- Some Quakers are Christian, some are Buddhist, some are even atheist." This was a great relief to me.
One of the things I didn't expect was the lack of pressure that I should come back. They said they hoped I had a rewarding time, and that they'd see me again, but "only if you want to". I will be going back- It has given me a lot of perspective, and has made me feel thankful and happy and, the best word I can use is contented.
So thank you all that replied to my OP