Hi Peter G 
Hopefully someone will register you at ODFAuthors soon.
They hopefully send you the login details such as username and password
privately. You might be able to change the password to make it something
that hasn't been sent over the internet by email (not a hugely high risk
for something like this but it is possible).
Do you have a preference for username? Something fairly short is usually
good. We already have at least 1 Peter, but sometimes seems like we have
many more.
Good luck and regards from
Tom