You will need to re-register under another username or possibly password too. Have you recently altered your settings, such as adding a firewall?
This is the most common problem for sudden loss of access. Try disabling your firewall and see if you can log in.
If you can, then you need to add the forum url to your permitted sites list.
Otherwise, e-mail me with your old username, and I'll re-set a new one.
leslie.henson3@ntlworld.com
Les.
