Adding a php library to cpanel

Hi

I am trying to add a php extension to my cpanel configuration /http://www.advsofteng.com/doc/cdphp.htm#cover.htm, i am doing it as most of the time, adding the specific library to my extensions folder and then setting it in my php.ini. Well the application says the library is not loaded...
i tried giving it chmod +x permissions to the library (which btw is a .dll extension and not a .so ) and restarting apache.

Maybe i am missing something because the software keeps claiming that i dont load the extension, any extra advice is really appreciated. Thanks.