php_zip PHP 5.05 extension issue

Hi, I installed php in c:\inetpub\php folder and gave access to IIS user. My web server is IIS5. I added HKEY_LOCAL_MACHINE\SOFTWARE\PHP\IniFilePath = ini path directory I uncommented extension=php_zip.dll in the php ini file and put php_zip.dll in php folder. I added extension_dir = "c:\inetpub\php\" in the ini file. When I set php to work as CGI with php-cgi.exe my test script works fine. When I switched from CGI to SAPI, I got this error Fatal error: Call to undefined function zip_open() in c:\Inetpub\wwwroot\autoupdate\default.php on line 3 Thanks in advance Regards, Vladimir