I'm really, really late to the party; but I bought a new copy of Fable II Limited Edition and there's no DLC code card for the exclusive content. I do have the 48-Hour Free X-Box Live Gold Subscription Code and ID Card, but I already have that. I'm told there should have been two different cards. I will only give that via private e-mail to an X-Box Live support agent if that can be used.
Google tells me this was a common problem, and could be fixed by going here. http://xbox360.ign.com/articles/924/924546p1.html?RSSwhen2008-10-28_110900&RSSid=924546 which is a dead link.
However, that expired back in 2008. Is there anything I can do?