I pre-ordered Infamous 2 from Play.com?

I pre-ordered Infamous 2 from Play.com, mainly for the cool samurai amp skins, now I just got it today, and when I entered my code thing, I got 2 download these exclusive Play.com powers, but I cant seem 2 find any options to change my amp skin, so as u can imagine I'm a bit baffled. Please, if any1 knows the answer 2 this let me know, thanks!