How do I use my Guild Wars: Eye of the North access keys?

The GW:EN are different than the first two games.



The GW:EN access keys are like 123-1234-1234 rather than the first two where it was 12345-12345-12345-12345-12345.



How do I use them? I tried going to the add access keys to current account thing, blah, blah, but nothing works. How do I do it? :(How do I use my Guild Wars: Eye of the North access keys?
My GW:EN key was 5 sets of 5 digits. I don't know where you got your key, but it doesn't sound right. There should be a sealed envelope in the game box with the key. If it's missing then return the game to the store.