WebRequest.GetResponse() - The underlying connection was closed

Greetings,

I have a problem with downloading a website to hard drive. I use code below and when I'm about to get answer I get an error:

The underlying connection was closed: The connection was closed unexpectedly.

I want to download that page to take from it data that I'm interested with.

Code:

---

private void DownloadPage()
{
    string url = "http://moneycentral.msn.com/scripts/webquote.dll";
    string para = "Symbol=msft&getquote=Get+Quote";
    string page  = "";


          try
            {
                HttpWebRequest PageRequest = (HttpWebRequest)WebRequest.Create(url);


                PageRequest.KeepAlive = true;
                PageRequest.Accept = "text/html, application/xml;q=0.9, application/xhtml+xml, image/png, image/jpeg, image/gif, image/x-xbitmap, */*;q=0.1";

                PageRequest.UserAgent = "Opera/9.64 (Windows NT 5.1; U; pl) Presto/2.1.1";
                PageRequest.Method = WebRequestMethods.Http.Post;
                PageRequest.ContentType = "application/x-www-form-urlencoded";
                PageRequest.ContentLength = para.Length;
               

                StreamWriter stOut = new StreamWriter(PageRequest.GetRequestStream(), System.Text.Encoding.ASCII);
                stOut.Write(para);
                stOut.Close();

                WebResponse PageResponse = PageRequest.GetResponse();    // here is the error

               

                StreamReader stIn = new StreamReader(PageResponse.GetResponseStream());
                page = stIn.ReadToEnd();
                stIn.Close();


            }
            catch (Exception Err) { MessageBox.Show(Err.Message); }



}

---