<?php  
include('MBT-comment.php');
include('MBT-post.php');
include('MBT-ad.php');
include('MBT-tabs.php');
include('MBT-vendor-links.php');

add_action('widgets_init','unregister_d_widget');
function unregister_d_widget(){
    unregister_widget('WP_Widget_Search');
    unregister_widget('WP_Widget_Recent_Comments');
    unregister_widget('WP_Nav_Menu_Widget');
}

?>