Adding another Site to an account

I have a site using Drupal. It’s a multi-site setup as I have both the main domain and a sub-domain configured.
Now I want to add a whole nother domain to my Drupal multi-site setup.
While I can forward to a and have that work in Drupal, the browser always shows addresses with
And the drupal config has to be setup for sites/

Is there something I can do with the control panel so that the new domain goes to the same Drupal installation, and Drupal can be setup with sites/ ?

Ok, I finally figured out the REALLY DUMB thing I was doing.
I hadn’t added the new domain, and set the DNS records.
Now it’s working.