PhpBB3

Bonjour,
J ai un petit probleme avec mes liens pour le forum ppBB3 toutes mes pages centrales fonctionnent avec un menu en php et des includes sur ma page d'index

pour l install du forum pas de problemes si je mets un lien directement vers la page index du forum en html ca fonctione bien
mais lorsque je fais appel avec des includes je recois l erreur suivante :


Warning: include(./common.php) [function.include]: failed to open stream: No such file or directory in /home/users/m/magpantay/www/phpBB3/index.php on line 20

Warning: include(./common.php) [function.include]: failed to open stream: No such file or directory in /home/users/m/magpantay/www/phpBB3/index.php on line 20

Warning: include() [function.include]: Failed opening './common.php' for inclusion (include_path='.:/home/temporaire/upload:/usr/local/lib/php/') in /home/users/m/magpantay/www/phpBB3/index.php on line 20

Warning: include(./includes/functions_display.php) [function.include]: failed to open stream: No such file or directory in /home/users/m/magpantay/www/phpBB3/index.php on line 21

Warning: include(./includes/functions_display.php) [function.include]: failed to open stream: No such file or directory in /home/users/m/magpantay/www/phpBB3/index.php on line 21

Warning: include() [function.include]: Failed opening './includes/functions_display.php' for inclusion (include_path='.:/home/temporaire/upload:/usr/local/lib/php/') in /home/users/m/magpantay/www/phpBB3/index.php on line 21

Fatal error: Call to a member function session_begin() on a non-object in /home/users/m/magpantay/www/phpBB3/index.php on line 24

merci de votre aide si precieuse
Anne Marie