Problem with loading module for Oracle

Hi! Help! PHP Warning: Unable to load dynamic library 'c:\php\extensions\php_oci8.dll' - This module not found. in Unknown on line 0. --- part of php.ini file --------- ;;;;;;;;;;;;;;;;;;;;;;;;; ; Paths and Directories ; ;;;;;;;;;;;;;;;;;;;;;;;;; ; UNIX: "/path1:/path2" Windows: "\path1;\path2" include_path = c:\php\pear\ ; The root of the PHP pages, used only if nonempty. doc_root = ; The directory under which PHP opens the script using /~usernamem used only ; if nonempty. user_dir = ; Directory in which the loadable extensions (modules) reside. extension_dir = c:\php\extensions\ extension=php_oci8.dll ----- end of part ----------------- File php_oci8.dll is exist in folowing path c:\php\extensions Other modules loaded succesfule!!!!!! What did me?