I'm not sure about that because if I recall correctly, the pre-order code expired like in January. Admittedly its been a while since I've seen that card that I got with the code, but I know it had an expiration date on it. It's possible there are some out there that work, but I'm pretty sure the expiration has passed.
You had to register your pre-order code before a certain date to get the pre-order stuff. It's no use to register anymore.