Maybe this thread was moved. Not sure. But it is in VPS Talk now and it has been established that you are a VPS user.
Have you purchased your domain name yet?
If yes, where did you purchase it from? Different domain registrars have different ways of setting up and managing nameservers.
If I understand you correctly, you wish to use your domain registrars name servers and have them manage DNS. Is this correct? This is usually pretty straight forward, but as I previously mentioned, the exact procedure varies depending on the registrar. I am currently using
namecheap.com for all my domain registrations. Unless they have changed procedures recently, you get setup with their nameservers by default during the registration process. And it is easy to modify that later if you need to. Hope this helps a little.