What do i have to do to be connected as DNS... ?It may just work if you are connected to a router providing IP address and DNS via DHCP.
Your Mac needs an IP address (something like 192.168.1.x) on the local network and the address of a DNS server which translates names like forums.macrumors.com into its IP address. These are usually provided by your router using a protocol called DHCP.What do i have to do to be connected as DNS... ?
It should just work.