If you're new to DNS, don't start here
I'm not a DNS guru, but I know enough to suggest that folks who are new to DNS to NOT start by following these screens - no forwarder is setup (like OpenDNS) despite a forward zone was specified, there's a premise stated that most still use WINS even though WinServer 2008 won't work without DNS, (I noticed on image 13 it mentions Windows 2000 - is this just an updated slideshow?) and there is no mention of the tight integration of the WinServer 2008's DHCP is quite important to DNS health.