Convert this server to a Caching-only DNS Server

     To convert this machine into a Caching-only DNS 
Server, select "Caching-only" from the "Advanced" 
menu.  You will then have several options of the type 
of machine you want this machine to be.  Just 
select:  "Convert this server to a Caching-only DNS 
Server".  As long as you have a connection to the 
Internet, your server should start working as a
Caching-only DNS server at this time.