Question : What is the effect of stopping the DNS Client on a DNS server?

I just read the EE Community Newsletter, in particular the "trick" from "Nata's Corner".  It sounds like a great way to reduce the impact of ads and viruses.  It referred me to an MVPS.org site - http://www.mvps.org/winhelp2002/hosts.htm
The "trick" is to download the HOSTS file from this site and install it on your machine.  One part of the procedure is to stop the DNS client service, using services.msc, and set the service to "Manual".
My question is:  Can this "trick" be used on a Windows DNS server?  What would be the effect of stopping the DNS Client on a DNS server?  (Windows Server 2003)  I think I can safely assume that the answer is "Don't use it on your DNS server".  But I'd really like to know exactly why, if possible.  Thanks.
P.S.  From http://support.microsoft.com/kb/318803 - on the role of the DNS client:
"The DNS Client service optimizes the performance of DNS name resolution by storing previously resolved names in memory. If the DNS Client service is turned off, the computer can still resolve DNS names by using the network's DNS servers. "

Answer : What is the effect of stopping the DNS Client on a DNS server?

You can add the modified Host file to your DNS server but do not stop the DNS client.
Adding the Host file to a server will not affect client machines, only the DNS server itself.

If you would like more control I would recommend subscribing to Open DNS (free) and using their DNS servers as forwarders, rather than your ISP. This allows much more control of unwanted website activity.
http://www.opendns.com/