Hi Sir,
Have you tried to edit your php configuration file ? (id est php.ini). Indeed cURL is a library for php, so you must configure your server's php settings.
Here's a tutorial http://www.tomjepson.co.uk/enabling-curl-in-php-php-ini-wamp-xamp-ubuntu/
EDIT: btw, you should rename this topic from 'cURL' to 'Enabling cURL', to help other.