In the latest version of centos, the one you have, all the example files are located in the manuals section. So if you do "locate named.conf' you will see there is a file structure in the docs/manual are for all that.
I just did mine. I set up 2 nameservers on one computer, chroot bind, not allowing anyone but my own server to lookup queries, and handle all my websites. It was not supereasy.
One of the biggest issues I had and finally figured out was that a datacenter will hold onto the PTR part of your ips it assigns you.
They gave me full control but I could never get it all working right as the ptr records would not resolve right. After 2 months I gave up...and then while talking to the datacenter, they said, "oh yea, we have to do that"
oy!!! Unless you get a full block like 64 ip addresses, they will have to do PTR...you just tell them your domains and they do it. You still set up bind like normal...
Here is an old version of what I had done so far...just to get you started, but the finished will not be reprinted for a bit.
Click here for older page of info
It all depends what you want to do too.
The finished one is more complex but actually works perfectly, even with two nameservers pointing to themselves on the same server.
Good luck with it, cause it is a bear.