Thanks everyone, it's good to see such an reactive forym
The problem , as usual was between keyboard and chair, i just didn't understand the MySql interface.
Now everything works fine.
Where can I activate the php extension "php_pdo_mysql' ?
I saw in the FAQ that this extension is supported but pdo can't work in my website
I hope I send this message to the right person.
(Excuse my english, i'm french)