C# help to login (security problem)

Question

I have this code snippet, and i have used it before to login to sites, but this website i can't get in to, could i get some help please?

 CookieContainer cookieJar = new




 CookieContainer();


        private




 void




 button1_Click(object




 sender, EventArgs e)


        {





            byte




[] POST_login = Encoding.ASCII.GetBytes("index.php?action=login&user=Sjums07&pwd=myPass&rem=on&submit=Login&soLogin=MGM4Y2U1NTE2MzA1NWM0ZGE1MGE4MWUwYTI3MzQ2OGM4MA=="




);


            HttpWebRequest req = (HttpWebRequest)WebRequest.Create("http://hacker-project.com/index.php"




);


            req.Method = "POST"




;


            req.ContentType = "application/x-www-form-urlencoded"




;


            req.ContentLength = POST_login.Length;


            req.CookieContainer = cookieJar;


            Stream postdata = req.GetRequestStream();


            postdata.Write(POST_login, 0, POST_login.Length);


            postdata.Close();


            HttpWebResponse resp = (HttpWebResponse)req.GetResponse();


            foreach




 (Cookie cook in




 resp.Cookies)


            {


                cookieJar.Add(new




 Cookie(cook.Name, cook.Value, cook.Path, cook.Domain));

That's what i've made so far.. and hacker-project is a game ;) nothing illegal :p