ayudaaaaaa

alguien
09 de Enero del 2004
en la administracion cuando le doy a foros me aparece esto
Warning: Cannot add header information - headers already sent by (output started at c:\apache\htdocs\html\header.php:32) in c:\apache\htdocs\html\includes\sessions.php on line 249

Warning: Cannot add header information - headers already sent by (output started at c:\apache\htdocs\html\header.php:32) in c:\apache\htdocs\html\includes\sessions.php on line 250

Warning: Cannot add header information - headers already sent by (output started at c:\apache\htdocs\html\header.php:32) in c:\apache\htdocs\html\includes\page_header.php on line 529

Warning: Cannot add header information - headers already sent by (output started at c:\apache\htdocs\html\header.php:32) in c:\apache\htdocs\html\includes\page_header.php on line 531

Warning: Cannot add header information - headers already sent by (output started at c:\apache\htdocs\html\header.php:32) in c:\apache\htdocs\html\includes\page_header.php on line 532

Que hago???