If no one has any help for you, why not call Apple? I'm sure they get this question a lot.
Originally Posted by reuben_mistry
My intuition tells me you're out of luck, because I think iTunes only syncs to the phone; and only vice versa when it is on the authorized account. And then still, you can only sync certain things, I believe. But like with contacts, when you don't have any previous entries, maybe it will fill it in. I just don't know.
Call Apple or look for a Apple Support Forum post.