problema de configuracion php IIS

[petoko]

Hola tengo un problema, traspasé un sistema desde un server con Apache a uno con IIS, y me aparece Error 500, me meti al log de errores y me aparece esto. Aguen Sabe que debo hacer?

Código:

[07-Jan-2013 10:32:15] PHP Warning:  PHP Startup: Unable to load dynamic library 'C:\Program Files (x86)\PHP-5.2.17\ext\php_oci8.dll' - The specified module could not be found.
 in Unknown on line 0
[07-Jan-2013 10:32:15] PHP Warning:  PHP Startup: Unable to load dynamic library 'C:\Program Files (x86)\PHP-5.2.17\ext\php_pdo_oci.dll' - The specified module could not be found.
 in Unknown on line 0
[07-Jan-2013 10:32:15] PHP Warning:  PHP Startup: Unable to load dynamic library 'C:\Program Files (x86)\PHP-5.2.17\ext\php_pdo_oci8.dll' - The specified module could not be found.
 in Unknown on line 0
[07-Jan-2013 10:32:15] PHP Warning:  PHP Startup: Unable to load dynamic library 'C:\Program Files (x86)\PHP-5.2.17\ext\php_pdo_sqlite_external.dll' - The specified module could not be found.
 in Unknown on line 0
[07-Jan-2013 10:32:15] PHP Warning:  PHP Startup: Unable to load dynamic library 'C:\Program Files (x86)\PHP-5.2.17\ext\php_pspell.dll' - The specified module could not be found.
 in Unknown on line 0
[07-Jan-2013 10:32:16] PHP Warning:  PHP Startup: Unable to load dynamic library 'C:\Program Files (x86)\PHP-5.2.17\ext\php_sybase_ct.dll' - The specified module could not be found.
 in Unknown on line 0