I'm about to buy a VPS on Knownhost. On my existing VPS host I have a dozen domains but I only want to move over two of my domains at first to see how it goes. When purchasing, Knownhost requires me to enter a hostname. Say my current VPS host name is host.mycurrenthostname.com. And the nameservers at my registrar are ns1.mycurrenthostname.com and ns2.mycurrenthostname.com. I eventually want to move the domain mycurrenthostname.com to Knownhost, but not right away. So this appears to be confusing (at least to me). If I use one of my other domains for the Knownhost hostname, say myotherdomain.com, how do I deal with the nameservers? Can I use mycurrenthostname.com in two hosts as a hostname for both and also as the name for the nameservers? And once I move mycurrenthostname.com over to Knownhost, what happens then? If I use myotherdomain.com in either or both of those categories (hostname and nameserver), can a nameserver and host name be changed later? I assume that will create problems, like sites not being accessible for a few days.