Localhost Wamp无法发送电子邮件

I downloaded the source code here http://www.html-form-guide.com/php-form/php-registration-form.html for a membership login site for my site, I extracted the zip file then paste the source folder in my localhost. I followed all the instructions there, everything are fine I can add new users in my database. The only problem I encountered is I can't send the confirmation code to the users email address. I got the error message "Failed sending registration confirmation email." which I believe is part in the phpmailer code.

if(!$mailer->Send())
        {
            $this->HandleError("Failed sending registration confirmation email.");
            return false;
        }
        return true;

Please help me I am new I just trying this one thank you so much! You can download the file in the link I provided to try it