To log in and post, you will need to reset your password on this new forum, following the link from the login screen, where you will need to enter the email address listed on your account. If you don't receive a password reset email, then check your junk/spam folder first.
The log in process from this point on will be with your email address and password.
For any further queries, email the forum moderator - forummoderator@warnersgroup.co.uk