MyBB.support, le portail francophone de MyBB

hello,j'ai install mybb mais quand j'essaye de créer un post ca me met cette erreur.

Citation :Can not upload file - Too large for php post_max_size directive. Please press the back button.

Citation :MyBB and Server Statistics Forum Statistics
MyBB Version 1.4.13 Threads 0 Threads
0 New Today
0 Unapproved
PHP Version 5.2.13 Posts 0 Posts
0 New Today
0 Unapproved
SQL Engine MySQL 5.0.90 Users 1,338 Registered Users
1,338 Active Users
1,338 Registrations Today
0 Awaiting Activation
Server Load 1.46 Attachments 0 Attachments
0 Unapproved
N/A Used

Merci pour votre aide.