565655 SMS to cellphones

I need a web form (in PHP) programmed with PHP and CURL (or other method) where people can send SMS to the company PERSONAL (Argentina) The original web is [login to view URL] What I need is that the visitor of my website doesn´t leave my web when he sends the SMS. Afther he sends the SMS he must be sent to my website. The form must be called from [login to view URL] (in the right sidebar you can see the SMS WEB FORM when you click "Envío de Mensajes SMS" When the user SENDS the SMS he must continue in my website. I mean, he must never leave my or know that the SMS is sent by [login to view URL] website. Yours, Francisco