public static bool GetRecaptchaImage(string challenge, ref System.Drawing.Bitmap picture)
        {
            Dictionary <string, string> getParams = new Dictionary <string, string>();

            getParams.Add("c", challenge);

            if (HttpRequests.HttpGetPictureRequest("http://www.google.com/recaptcha/api/image", getParams, ref picture))
            {
                return(true);
            }
            else
            {
                return(false);
            }
        }