How do you use the WOW Game card?

Go to account management and log in. There will be link that says add game time code under the billing info block. Enter the code on the back of the card. You will have to scratch off the gray coating to reveal the code.
http://www.youtube.com/watch?v=WOo_4EkkEXE

http://www.youtube.com/watch?v=6e6fpOmpo1c&feature=related


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http://entertainment.upperdeck.com/WOW/en/howtoplay/default.aspx