How to create an extra .php page ?

[Oleks]

assassingod,
It is works if to change
eval('$HTML = "' . fetch_template('name of template') . '";');
to
eval('$HTML = "' . fetch_template('navbar') . '";');

I'd like to add some text or HTML code into that new page.
But, I can not figure out how and where to insert text or any HTML code in that extra page. What I should add to this code? Please, help.

<?php

// GO TO FORUM DIR
chdir('/full/path/to/forum/directory');

// STANDARD VBULLETIN STUFF
define('NO_REGISTER_GLOBALS', 1);
define('THIS_SCRIPT', 'script_name');
require_once('./global.php');

// GENERIC_SHELL VARS
$pagetitle = "Title of Page";
$HTML = ""; // PIECED TOGETHER IN SCRIPT

eval('$HTML = "' . fetch_template('navbar') . '";');

eval('print_output("' . fetch_template('GENERIC_SHELL') . '");');

?>

Thank you.