How can i add somebody that lives in Venezuela to my whatsapp list on a nokia nuron?

[Ag!]

Ok soo i trying to add my friend that lives in venezuela to whatsapp, she added it on her phone but i dont know how to make her show on my list. I have an American phone number and she has a venezuelian! Helpp mee pleasee i havee a nokiaa nuron! pleasee explainn in bestt way thankss