1) go to World of Warcraft: Wrath of the Lich King download | Joystiq and download the WotLK Client.
2) Run it, and where it says Select Product click Wrath of the Lich King
3) After it installs run the launcher, until it says downloading WoW 3.3.5 - 4.x.x or whatever, then CANCEL THE INSTALLATION!
4) go to The Patches Scrolls : game updates, patches & addons - 15 years of Gaming
5) manually patch up from 3.0.1 to 3.3.5a
6) go to your WoW folder, open the subfolder, Data, then open EnUS, then open Realmlist via Notepad
7) Alter it to whatever the server says to
8) Run WoW.exe, do NOT run the launcher (this will patch up WoW)