note 24762 added to function.header

Hi guys, I need your help. I am studying a script from a book, and the script is like(in the line 11): http://www.phpdreamweavermx.co.uk/downloads/admin/login.txt but everytime when I run the script, it keeps telling me that "Warning: Cannot add header information - headers already sent by (output started at c:\program files\apache group\apache\htdocs\php_site\include\function.php:107) in c:\program files\apache group\apache\htdocs\php_site\members\login.php on line 18" but I already put the script above any html tag. is there any problem with the header() function? thank you. sam -- http://www.php.net/manual/en/function.header.php http://master.php.net/manage/user-notes.php?action=edit+24762 http://master.php.net/manage/user-notes.php?action=delete+24762 http://master.php.net/manage/user-notes.php?action=reject+24762