大致如下：

$args = array(
              \'posts_per_page\' => 10, 
              \'post_type\' => \'post\',
              \'meta_key\' => \'METAkeyNAME\', //what I assume you\'ve called a meta box
              \'meta_value\' => \'THEdesiredVALUE\',
              \'orderby\' => \'ID\', //choose to order by anything look here [http://codex.wordpress.org/Class_Reference/WP_Query#Order_.26_Orderby_Parameters] for more info
              \'order\' => \'ASC\',
              );

$results = new WP_Query($args);
//    \'<pre>\'.print_r($results).\'</pre>\'; // This is a useful line to keep - uncomment it to print all results found - it can then be used to work out if the query is doing the right thing or not.
while ($results->have_posts()) {
    $results->the_post();
    the_title();
    the_content();
    echo \'</hr>\'; // puts a horizontal line between results
}

    wp_reset_postdata(); //re-sets back to normal       

}