Go to your adsense and click AdSense for Search

From September 8, 2011

Click Get Started to begin the search;

U will have this form.. Just input the form until like below;

add your friend site and don't forget to add word related to your site.
in this we can scroll to bottom;


Just input what you need to input then click add new channel

input your new channel.. I suggested something unique;

Perhaps this not soo unique.. just click "continue";

now we must config your search looks like. Edit then continue;

This page will show after search type in your form.. you can place in your site or outside.. I choose outside;

Give your search name and click submit;

Please wait a minutes than copy paste the code to your site.