Name Server

Hello,

I am changing my organizations network around to make it a little more
independant then it had been in the past.

Currently we are hosting all the web services and email on our local servers
but our ISP is hosting our DNS and just pointing web and email traffic at our
static IP. We are in the process of changing our ISP and I want to be able to
setup my own name server and do all my DNS as needed "in house".

Here's my trouble; I'm unsure of how to setup a name server. This is the
part where I hope you can clarify for me.

I think what I need to do is setup a server on my network as the DNS server,
create the forward and reverse lookup zones then open up port 53 on my
firewall to allow the traffic and update my DNS information for my domain
name with my registrar. Correct?

Thanks!