Thank you Terry and Lloyd.
Terry I have tried to register with the site you gave, but am having problems. I cannot receive a confirmation e-mail, I have contacted them (by e-mail) and they have replied to me on the same e-mail address. They have told me that the problem probably lies with my spam filters (whatever they are)
The site has allowed me to log-in using the details I gave them, it says I am logged in, but wont allow me to post any threads. I think I'll give up, I've never had this problem with any other site.