Changing Realms

Hi guys... just wanna ask an assistance how to change the realm of the client (WOTL) that i downloaded from ******-Wow i just found out this is the best server for me because of the balance that it has.. every time that i am changing the realmlist to logon.warmane.com it is still directing me to the realm of ******-Wow please help really wanna switch to warmane from ******-wow

WOTLK realmlist is generally stored inside the language folder. \Data\<language\realmlist.wtf
Alternatively, you can download our official client.