Advanced Poll v2.02 add to html troubles

Please, very need help.
I've installed Advanced Poll to web and configured as I needed - it's ok.
According to the readme.txt I have been trying to put it html - nothing.
As far as I understand, there is should be script under <html> tag:
<?php
include_once "poll/poll_cookie.php";
?>
and in <body> </body> there should be:
<?php include_once "poll/booth.php"; echo $php_poll->poll_process(6);?>
(for example)... But when I upload html to web I see text "poll_process(6);?>".
Please, what the way I could solve this problem?! (I've tryed to put the whole direction: <?php include_once "http://www.mysite.com/poll/booth.php"; echo $php_poll->poll_process(6);?> - but it doesn't work).

Please, I really need your help!!!!

P.S. Sorry, I guess, it's stupid question, but I'm not pro in php!