How do you install all expansion packs from WOTLK

FOR MAC USERS

You have to have Wow first, meaning if you wanted to uninstall and reinstall and below when i state you have to remove all wow related folders, it includes addons, you can copy them.
In order to remove the World of Warcraft from your system, you will need to use the built-in uninstall feature. To initiate the uninstallation process, please follow the attached instructions.

For Mac Users:

1. Navigate to your World of Warcraft folder. Move the entire folder to the trash.
2. Go to your Macintosh HD/Users/Shared folder and move the Blizzard folder to the Trash
3. Go to your Macintosh HD/Users/your username/Library/Preferences and delete any files associated with WOW:
(some files may not appear due to non-use)

- com.blizzard.downloader.plist
- com.blizzard.Downloader.prefs
- com.blizzard.errorreporter. plist
- com.blizzard.Installer.plist
- com.blizzard.launcher.plist
- com.blizzard.World of Warcraft.prefs
- com.blizzard.World of Warcraft.survey.prefs

4. Empty Trash bin

5. Install the Wrath of the Lich King from the DVD or downloaded installer, which will install the original World of Warcraft, Burning Crusade and the Wrath of the Lich King in one take.
6. patch to the latest version of the game

Please note that you will not have to install the original World of Warcraft, as the Wrath of the Lich King DVD will contain all files necessary to install the game so please just insert the Wrath of the Lich King DVD after uninstalling and follow the only screen prompts to reinstall World of Warcraft, and the expansions.

After the game is re-installed, please make sure to not reinstall any custom UIs. Connect to the game servers and download the latest patches to test the game.