Hit Create Account to create game account in order to play.
Update WoTLK client to patch 3.2.2. If you don’t have WoTLK client, here is the link for you to download it for free: Download WOTLK
Modify realmlist.wtf, the default location is C:\Program Files\World of Warcraft\Data\enUS\realmlist.wtf or you need to find it in your wow install folder.
set realmlist logon.wowoptimus.com
Optional you may want to delete directory Cache from C:\Program Files\World of Warcraft\ because will clear all old informations about other npcs or items from other servers you may played on.
After the account creation, you may need to wait 3 minutes to become active.
Acasa