Guardians of Middle-Earth + Smaug’s Treasure DLC Steam CD Key

 1. Go to: http://store.steampowered.com/ and download STEAM client.
2. Click "Install Steam" (from the upper right corner)
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3. Install and start application, login with your Account name and Password (create one if you don't have).
 
4. Please follow these instructions to activate a new retail purchase on Steam:

    Launch Steam and log into your Steam account.
    Click the Games Menu.
    Choose Activate a Product on Steam...
    Follow the onscreen instructions to complete the process.