Hey guys. I have all 3 games of WoW in their retail discs (Original, Burning Crusade, and Wrath of the Lich King) and I successfully installed the Original one. Once I was done, I put the disc for Burning Crusade in and when I click the .app for that, it only gives me the option to PLAY instead of INSTALL. I need to install up to Wrath of the Lich King and how come the INSTALL button is gone and the PLAY button is there instead? When I click the PLAY button, it tries to download the newest patches for me (which I don't want). This happens when I put the Wrath of the Lich King disc inside the DVD Rom drive as well. What am I doing wrong? Can somebody help me please? Thank you so much!