source: trunk/www.guidonia.net/wp/wp-admin/import.php@ 44

<?php
/**
 * Import WordPress Administration Panel
 *
 * @package WordPress
 * @subpackage Administration
 */

/** Load WordPress Bootstrap */
require_once ('admin.php');
$title = __('Import');
require_once ('admin-header.php');
$parent_file = 'tools.php';
?>

<div class="wrap">
<?php screen_icon(); ?>
<h2><?php echo esc_html( $title ); ?></h2>
<p><?php _e('If you have posts or comments in another system, WordPress can import those into this blog. To get started, choose a system to import from below:'); ?></p>

<?php

// Load all importers so that they can register.
$import_loc = 'wp-admin/import';
$import_root = ABSPATH.$import_loc;
$imports_dir = @ opendir($import_root);
if ($imports_dir) {
        while (($file = readdir($imports_dir)) !== false) {
                if ($file{0} == '.') {
                        continue;
                } elseif (substr($file, -4) == '.php') {
                        require_once($import_root . '/' . $file);
                }
        }
}
@closedir($imports_dir);

$importers = get_importers();

if (empty ($importers)) {
        echo '<p>'.__('No importers are available.').'</p>'; // TODO: make more helpful
} else {
?>
<table class="widefat" cellspacing="0">

<?php
        $style = '';
        foreach ($importers as $id => $data) {
                $style = ('class="alternate"' == $style || 'class="alternate active"' == $style) ? '' : 'alternate';
                $action = "<a href='admin.php?import=$id' title='".wptexturize(strip_tags($data[1]))."'>{$data[0]}</a>";

                if ($style != '')
                        $style = 'class="'.$style.'"';
                echo "
                        <tr $style>
                                <td class='import-system row-title'>$action</td>
                                <td class='desc'>{$data[1]}</td>
                        </tr>";
        }
?>

</table>
<?php
}
?>

</div>

<?php

include ('admin-footer.php');
?>