name server versus domain name

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http://serverfault.com – I have a VPS running Centos 5.8 and Webmin. I came with 2 IP numbers. I need to create a domain name and name servers. My domain registrar needs a name server (eg: ns1.domain.com.) to created a domain name. And webmin demands a domain name to create the name servers from??? catch 22? I understand what a name server does. But how to create the one without the other? What am I not understanding here. Thanks Brian (HowTos)