Voila voulant installer phpwebgallery sur mon server j'ai fait une pitite install d'apache (2.0.48) et php (4.3.4)

jusque la tout se passe bien, je lance le /galerie/admin/installl.php, ca marche, je choisi la langue, je laisse localhost pour la bdd, j'indique la database je clique sur "valider"

et là, c'est le drame : 

Notice: Use of undefined constant PREFIX_INCLUDE - assumed 'PREFIX_INCLUDE' in D:\www\galerie\admin\install.php on line 21

Notice: Use of undefined constant ATT_REG - assumed 'ATT_REG' in D:\www\galerie\include\functions_xml.inc.php on line 21

Notice: Use of undefined constant VAL_REG - assumed 'VAL_REG' in D:\www\galerie\include\functions_xml.inc.php on line 22

Notice: Undefined variable: conf in D:\www\galerie\language\francais.php on line 220

Notice: Undefined variable: conf in D:\www\galerie\language\francais.php on line 220

Notice: Undefined variable: conf in D:\www\galerie\language\francais.php on line 222

Notice: Undefined variable: conf in D:\www\galerie\language\francais.php on line 222

Notice: Undefined variable: conf in D:\www\galerie\language\francais.php on line 541

Warning: Cannot modify header information - headers already sent by (output started at D:\www\galerie\admin\install.php:21) in D:\www\galerie\admin\install.php on line 113

Warning: Cannot modify header information - headers already sent by (output started at D:\www\galerie\admin\install.php:21) in D:\www\galerie\admin\install.php on line 114

Warning: Cannot modify header information - headers already sent by (output started at D:\www\galerie\admin\install.php:21) in D:\www\galerie\admin\install.php on line 115

par contre lors du choix de la langue et de l'etape 1 j'ai des meesage du genre :

Notice: Use of undefined constant PREFIX_INCLUDE - assumed 'PREFIX_INCLUDE' in D:\www\galerie\admin\install.php on line 21

Notice: Use of undefined constant ATT_REG - assumed 'ATT_REG' in D:\www\galerie\include\functions_xml.inc.php on line 21

Notice: Use of undefined constant VAL_REG - assumed 'VAL_REG' in D:\www\galerie\include\functions_xml.inc.php on line 22

Notice: Undefined variable: conf in D:\www\galerie\language\francais.php on line 220

Notice: Undefined variable: conf in D:\www\galerie\language\francais.php on line 220

Notice: Undefined variable: conf in D:\www\galerie\language\francais.php on line 222

Notice: Undefined variable: conf in D:\www\galerie\language\francais.php on line 222

Notice: Undefined variable: conf in D:\www\galerie\language\francais.php on line 541

Notice: Undefined index: cfgUser in D:\www\galerie\admin\install.php on line 153

Notice: Undefined index: cfgBase in D:\www\galerie\admin\install.php on line 155

vous savez d'ou ca peut venir :??: