Quick Wordpress to Facebook Intergration

We currently have a wordpress site using Twenty Ten 1.0 by the WordPress team Theme intergrated with our website template. For some reason when I install this plugin [login to view URL] We are unable to see the facebook comments on the site. I have already set up App in my app in facebook but comments are not showing up. I'm sure it's a quick and easy fix in the template manager but I need someone experienced that wont make a mess of it. Need this done in the next few hours. Please let me know!