Connecting to a private server

As told in the Description of the category, here it is.
To connect to a private server, simply go into program files, probably in disk C: and go to World of warcraft, find realmlist.wtf and double click it, open it with notepad, change the Set Realmlist <>, You need to change the stuff after Set realmlist to whatever the connection info for the server is, like for mine, it'sSet Realmlist Main2.wowlord.com