The Witcher 2: Assassins of Kings Enhanced Edition Steam Gift

All existing owners of The Witcher 2 received free upgrades to the Enhanced Edition, and could pre-load the update starting 11 April 2012. All new copies on PC and Xbox 360 shipped with the additional content on board. The Witcher 2: Assassins of Kings – Enhanced Edition added over 10GB of new content, including four hours of gameplay, arena mode, new tutorial, 36 minutes of cinematics including a new intro created by Platige Image and an outro, as well as a host of fixes to gameplay and the interface.”Please remember that we are NOT responsible for any problems that may arise from purchasing and using Steam Gifts. You are doing it at your own risk.
“Please note, that due to recent Valve Steam Gift policy update Steam Gifts for games that are covered by VAC ban program can no longer be added to Inventory. Make sure that you are logged in to the proper account before entering the link as Steam Gifts can be only added to your library or rejected.

How do I use a Steam gift given to me?

If you do not already have Steam, download and install Steam here. Once you have Steam installed, you will be prompted to create an account or login to an existing Steam account. If you do not have an account, please create one.
You will receive an e-mail containing a link that will open Steam allowing you to redeem your gift. After clicking the link, you will receive a notification at the top right corner in the Steam client informing that you have a new gift.