Thanks by your help! But to obtain that it works I had to copy two archives associated to php_curl.dll, these come in PHP's package: ssleay32.dll and libeay32.dll According to install.txt (inside of php-4.3.11-Win32.zip), these two archives must be copied in two places: W:\usr\local\Php\ W:\usr\local\Php\dll\ After this, CURL appears like activated in PHPinfo. Now, I hope that it works without problems Again, thank you very much.