I've started building a blog network for my own sites out of high PR expired domains. I've lined up a host that can provide me with a VPS and add on IPs in different C classes. I've read that it is beneficial, maybe essential, to have each domain on its own unique nameservers. How is that usually handled? I usually just run the DNS off the DNS server on the VPS, but in that case all domains are linked by the same nameserver. I could run dns off the registrar, but all my domains are at namecheap so that does not look like much a solution either. Any suggestions?