please help me

im getting this error warning
what am i doing wrong ???

Warning: Cannot add header information - headers already sent by (output started at /usr/home/www.mysite.nl/www/poll.php:5) in /usr/home/www.mysite.nl/www/poll/db/poll_cookie.php on line 21

rgds
Xepa

This topic was covered a few forum pages ago. You probably haven't included the

<?php
// Important! You have to include it before your html code
require "/htdocs/vurs/anketa/poll_cookie.php";
?>

before the <html> tag on the very top of the page.

Instead of the "/htdocs/vurs/anketa/ you use your path.