Curt (4 Aug 2011)
"To: Diane Gilbert: Re: "I have been BANNED!""

Diane - many ISPs use dynamic IP addresses, which basically means that
your address changes from time to time. Most likely, you have been
assigned an address that was previously used by someone else who got
themselves banned. If you wait a few weeks, it should go away when you
get a new IP address. Alternatively, you could probably just e-mail
the site operators and ask them to unban your IP address.

You can find out what your external IP address is by going to this