I have a php account with my provider, and I also have cpanel installed for me.
I currently have two drupal sites there, let's called the main myMainSite and another one under construction called myNewSite.
So when I go to www.myMainSite.com, I go to the main site. When I go to myNewSite.myMainSite.com, i go to the drupal site that is under construction.
My question is, when my under construction site goes live, I want that all users that go to www.myMainSite.com see the new site (the one that is under myNewSite.myMainSite.com).
How can I accomplish this with cpanel? is it within the "addon domains" configuration? I don't want a redirect that changes the address bar, ie, I want to keep the original url.