Hello Guys!
I have decided to repost this guide as I fell it may benifit many people.
Step One : Open up your would of Warcraft Directory ( by default it will be C:/Program Files/World of Warcraft/ )
Step two : once in, Look for all files that look like the ones in the picture below ( Do NOT delete Downloader or Updater, They are what WoW uses to patch )
Step 3 : Highlight all the files and hit delete ( Also, Select the two folders highlighed below )
Step 4 : Go to your recycle bin and hit " Empty "
Step 5 : Dance around the room because you just saved yourself 6GB worth of space!