DNS setup?

Hi, I am setting up a firewall/masq with a webserver in the DMZ and my personal home computers on the intranet. When I try and set up my DNS registration, it asks for the DNS names. I have a question on primary/secondary DNS, and naming conventions: 1. Is it best to have the Primary DNS on the webserver box, and the secondary DNS on the firewall/masq box, or the other way around? 2. What kind of naming convention is best for this set up? Assuming DNS-1 is webserver, and DNS-2 is the firewall, should the webserver be named myRegisteredSite.com and the firewall be named firewall.myRegisteredSite.com? or how is that done in this situation? Thanks, -Jeric