Well in order to run your own DNS servers your going to need 2 static IP addresses. You could set up BIND and set it to listen on the two ip addresses and give your server two IP addresses. And just use one DNS server for your server. And just tell your register your dns servers are ns1.yourdomain.com = IP 1 and ns2.yourdomain.com = IP 2. And that would work, if your primary DNS server is off line that usually means your server is down. When my old server was co-located for 6 months I ran the DNS server like that for 6 months, never had a problem.
Personally I wouldn't run a DNS server on a home webserver. Linux Server Talk is powered by a home webserver. And we use DNS made easy, DNS service for 25 domains for $59.95. And there is also the free DNS service from
www.zoneedit.com. Zone Edit offers free DNS service for up to 5 domains.
If your dead set on running your own DNS server I would install a control panel like
www.webmin.com. Webmin has a GUI interface for setting up Bind. It makes it really easy. And if you install Virtualadmin with webmin, virtualmin will set up everything for you. DNS (Bind), http, ftp and email, all at a touch of a button.
EDIT:
www.dnsmadeeasy.com is our DNS service provider.
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