Administration de joomla

Bonjour,
je viens d'installer joomla. A la fin on me demande de supprimer le dossier "installation". Moi je l'ai pas supprimer mais je l'ai plutot renommer en "installation1". Mon problème est que je n'arrive pas à acceder à la page d'accueil d'administration. voici ce qui s'affiche sur mon ecran. Merci de bien vouloir m'aider à resoudre ce problème.


Strict Standards: Non-static method JLoader::import() should not be called statically in C:\Program Files\EasyPHP-5.3.8.0\www\Joomla_1.5.25-Stable-Full_Package_fr\libraries\joomla\import.php on line 29

Strict Standards: Non-static method JLoader::register() should not be called statically in C:\Program Files\EasyPHP-5.3.8.0\www\Joomla_1.5.25-Stable-Full_Package_fr\libraries\loader.php on line 71

Strict Standards: Non-static method JLoader::import() should not be called statically in C:\Program Files\EasyPHP-5.3.8.0\www\Joomla_1.5.25-Stable-Full_Package_fr\libraries\joomla\import.php on line 32

Strict Standards: Non-static method JLoader::register() should not be called statically in C:\Program Files\EasyPHP-5.3.8.0\www\Joomla_1.5.25-Stable-Full_Package_fr\libraries\loader.php on line 71

Strict Standards: Non-static method JLoader::load() should not be called statically in C:\Program Files\EasyPHP-5.3.8.0\www\Joomla_1.5.25-Stable-Full_Package_fr\libraries\loader.php on line 161

Strict Standards: Non-static method JLoader::register() should not be called statically in C:\Program Files\EasyPHP-5.3.8.0\www\Joomla_1.5.25-Stable-Full_Package_fr\libraries\loader.php on line 138

Strict Standards: Non-static method JRequest::clean() should not be called statically in C:\Program Files\EasyPHP-5.3.8.0\www\Joomla_1.5.25-Stable-Full_Package_fr\libraries\joomla\import.php on line 33

Strict Standards: Non-static method JRequest::_cleanArray() should not be called statically in C:\Program Files\EasyPHP-5.3.8.0\www\Joomla_1.5.25-Stable-Full_Package_fr\libraries\joomla\environment\request.php on line 463

Strict Standards: Non-static method JRequest::_cleanArray() should not be called statically in C:\Program Files\EasyPHP-5.3.8.0\www\Joomla_1.5.25-Stable-Full_Package_fr\libraries\joomla\environment\request.php on line 464