so I don't know what store you want but it doesn't matter. just go to the store in itunes, scroll to the bottom of the screen and choose whatever country you want.
I hope you didn't wait for the answer here. It's kinda obvious if you look on the page.
In this day and age, the real question is, why would you sign up for AOL?
i just singed up for aol and i have the uk itunes store and it says its only good in the us