Hi Nigel,
It needs an Admin to change a username, I'm afriad I can't do it as a moderator. I'll contact our two admins and ask someone to change it for you.
I've removed your email address from your post above, we don't advise having the email address visible on the forum, otherwise you could get a lot of spam as anyone anywhere can then see it even if they are not a member here.
In the same way I would not advise you having your email address as your registered name. You can have the email address entered separately behind the scenes in a way that is only visible to you and to moderators/admins. Here is a link to where you can change that bit yourself.
http://www.orchidboard.com/community...o=editpassword
I'll ask the admins to set you to Nigel_99 as that should be easy for you to remember without giving out an email address.