Well when I did install ISPconfig I moved it to port 80.
I understand what you mean, I located the ispconfig.vhost files in /etc/apache2/sites-available and added "ServerName anothername.example.com" after <virtualhost *:80> and removed the site I had added for that domain.
Then I commented out "NamedVirtualHost *:80 and presto it works
Thank you for your help!