Activation Code

Yeah, yeah. I know a stupid question but i'm going to ask it anyways.

I bought Guild Wars, game of the year edition, and I was curious if any one could tell me where in the world tbe activation code is, I can't find it, I can however find a couple diffrent codes but none of them equal the 25 letters/numbers you have to have. Any help would be appreciated.

I think there are 2 possibilities: A Gamecard, credit card size, scratch off the cover thingy with a coin, or a piece of paper that you have to "rip" open to see it.

Thank you, thank you very much.