Eventually we had to give in. The spam problem on the old site
was getting so bad, that in order to manage it, we had to spend 24/7 just dealing with it. If we weren't quick enough to deal with it, then we lost contributors.
We have now obviously installed this new vBulletin software and some other customizations to get things going here.
We also realise that those who ask about their problems do not necesarily turn into regular posters, so we still have the ability for people to post with registering as members.
Currently we are transferiing most of the messages from the old site to this one. Next all the links to the old site will be pointing to this one.