ok two things first of all they do not accept RN's with a ADN and they have a very good site
http://www.cno.org/. You can either call them or email them requesting the application package
http://www.cno.org/for/intl_apps.htm that is the link for internationally educated applicants. I called them and asked they told me that they would evaluate my credits and then decide if I need to take extra classes to meet their requeriments. Anyway let me know if you need anything