"Download The Stone Prisoner and gain access to Shale, a mighty stone golem who can join the party and travel throughout Dragon Age: Origins. One of the most powerful characters in the game, Shale comes with a rich back story, extensive voice acting, and a unique follower quest to explore. The Stone Prisoner also includes new environments, items, and hours of additional gameplay that adds to the Dragon Age: Origins campaign."Go to: http://www.origin.com/us/about
Click “Download Origin” (from the upper left corner)
Login into downloaded application
Install and start application, login with your Account name and Password
(create one here: http://store.origin.com/ if you don’t have).
Redeem Product Code
From the “Origin” drop-down menu (upper right corner) choose “Redeem Product Code…”,
enter your code and click “Next”.
Download your Game
After successful code verification go to the “MY GAMES” tab and start downloading.