This guide sets you up on how to Download WoW Cataclysm for 4.3.4
1) First, you must download the appropiate 4.3.4 Cataclysm Client
2) You must decide whether you want to use a Full or Fast client. (Both are provided).
3. Finish downloading.
4. Change your realmlist.wtf file to the Cataclysm...