WOW: Retail Cataclysm Don't install from the CD You'll be wasting precious minutes Do this instead

If you're picking up Cataclysm retail tonight, you may be inclined to pop in the CD once you bring the game home. Don't! It will install the cataclysm content files, but in so doing you'll be downgraded to 4.0.1! So after a 20 minute CD install you'll need to re-install 4.0.3!
Instead, go into your WTF folder in your World of Warcraft directory. You're going to edit two files: Launcher.WTF, and Config.wtf.
Both files have the same line you need to change.
Change

SET accountType "LK"

To

SET accountType "CT"

Once you do this, restart your launcher. You'll download the Cataclysm files you need that would otherwise come from the CD, only you'll also be up to date and won't need to re-upgrade your downgrade.
When you pick up Cataclysm tonight, come home and log into your battle.net account. All you'll need to do is add the key that comes with your CD, and you're good to go! On half an hour ahead of your fellow retail friends!This is a Blue approved method to grab Cata data.