I have successfully browsed to: http://localhost/phpinfo.php 
the phpinfo.php file will show you information about the php install, one of the pieces it will show is information about cURL if it is enabled.
it will also show the location for the php.ini file that is being loaded by the PHP server, make sure that you are editing the correct php.ini file to enable cURL.
since it is not being enabled, i don't think you are editing the correct one. the information that the phpinfo.php file shows you will help you top find the correct one.
