@RubyBright
I think Ruud9 is referring to a Certificate of Financial Responsibility. They are often required of international applicants to show that they can pay for school/living expenses.
@Ruud9
I am not an international student myself, so I don't know how the CFR process works, sorry. Congratulations on your acceptance, though! I too was accepted to NC State recently (different program), so please share any information that you come across.