OK.... I bought the Battle Chest that has both WoW and Burning Crusade. So my question is... Am I supposed to install WoW first... play through it... then when I'm ready, install Burning Crusade??? Or... Am I supposed to install both, and just play like a normally do?! I noticed that the manual seems to be specific for WoW, and the Burning Crusade strategy guide shows alot of changes in the game. Any suggestions?!