advanced poll 2.08 how to insert in zencart?

hello I would insert this fantastic script that I am testin on local pc, it goes ok, it is great, I don't understand what code insert in zencart.

I have a sidebox free to insert this poll, can you say to me what code I have to insert?

Please
thank in advance

I have inserted on local pc

<?php
include_once "C:/Programmi/xampp/htdocs/sondaggi/poll_cookie.php";
?>
<?php
include_once "C:/Programmi/xampp/htdocs/sondaggi/booth.php";
echo $php_poll->poll_process(4);
?>

I controlled relative path and it is correct
on site it displays

poll_process(4); ?>

what could it be?