Sensei integration for the WordPress Twentyten theme from. Add the code below into your themes functions.php.

twentyten-functions.php

/*********************
*  Sensei Integration
*********************/


/**
 * Declare that your theme now supports Sensei
 */
add_action( 'after_setup_theme','twentyten_sensei_support' );
function twentyten_sensei_support () {

    add_theme_support( 'sensei' );

}

/**
 * Remove the default Sensei wrappers
 */
global $woothemes_sensei;
remove_action( 'sensei_before_main_content', array( $woothemes_sensei->frontend, 'sensei_output_content_wrapper' ), 10 );
remove_action( 'sensei_after_main_content', array( $woothemes_sensei->frontend, 'sensei_output_content_wrapper_end' ), 10 );


/**
 * Add The twentyten custom  Sensei content  wrappers
 */
add_action('sensei_before_main_content','twentyten_sensei_wrapper_start', 10);
add_action('sensei_after_main_content','twentyten_sensei_wrapper_end', 10);

function twentyten_sensei_wrapper_start (){

    echo '<div id="container">';
	echo '<div id="content" role="main">';

}

function twentyten_sensei_wrapper_end (){

    echo'</div> <!-- end #content-->';
    echo'</div> <!-- end #container -->';
    get_sidebar();

}

/**
 * remove default sensei titles
 */
global $woothemes_sensei;
remove_action( 'sensei_course_single_title', array( $woothemes_sensei->frontend , 'sensei_single_title' ), 10 );
remove_action( 'sensei_lesson_single_title', array( $woothemes_sensei->frontend , 'sensei_single_title' ), 10 );
remove_action( 'sensei_quiz_single_title', array( $woothemes_sensei->frontend, 'sensei_single_title' ), 10 );
remove_action( 'sensei_message_single_title', array( $woothemes_sensei->frontend, 'sensei_single_title' ), 10 );

/**
 * Add custom twentyten title:
 */
add_action( 'sensei_course_single_title', 'twentyten_single_title', 10 );
add_action( 'sensei_lesson_single_title',  'twentyten_single_title', 10 );
add_action( 'sensei_quiz_single_title', 'twentyten_single_title', 10 );
add_action( 'sensei_message_single_title', 'twentyten_single_title' , 10 );

function twentyten_single_title() {
    ?>
    <header class="entry-header">
        <h1 class="entry-title "><?php the_title(); ?> </h1>
    </header>
<?php
}
/***************************
*  // END Sensei Integration
****************************/