My site

1. Go To Blogger > Design > Edit HTML
2. Backup your template
3. Click the "Expand Widgets Templates" Box
4. Search for this,

<data:post.body/>

    5.    Just above it paste the code below,

<iframe allowTransparency='true' expr:src='&quot;http://www.facebook.com/plugins/like.php?href=&quot; + data:post.url + &quot;&amp;layout=button_count&amp;show_faces=false&amp;width=100&amp; action=like&amp;font=arial&amp;colorscheme=light&quot;' frameborder='0' scrolling='no' style='border:none; overflow:hidden; width:100px; height:20px;'/>

     6.   Save your template and you are done!

Visit your blog to see it working just fine just below post titles. Feel free to ask any questions you may have.