How to get my friend back?  

Haven't you initiated a talk. Speak up to her. Tell her that you miss her and wanted her back. Just be honest.

the first thing you have to do is to ask a common friend of yours so that you can ask if both of them have communication. in that way you will be able to communicate with her. you said that she already lived in different country so the best way to communicate with her is through the net, facebook or emails.

If I were you I would definitely look into finding her. You can always look at peoplefinders.com where you just type in the person's name and it will search for her. Another option is finding websites that she are on such as facebook. Alot more people are joining social sites and you may be able to find her on there. But most of all you need to talk to her. Good luck with your search.

During your misunderstandings, why didn't you settle it in the first place? Was the misunderstanding so huge that you weren't able to swallow your pride and maintain the friendship. Communicating with her again is very hard since you no longer have information about her. Wait for the right time or find ways in order to find her. There are already so many social networking sites out there. I'm sure it'll be a big help.

Hello
Create your profile in tagged, sonico, facebook, friendster etc i am sure one day you will get her back, have faith on god..
Thank you so much for this nice discussion, cheers
God bless you.
Prof