i put this direct below a button:

            XmlDocument doc = new XmlDocument();
            XmlElement root = doc.CreateElement("Login");
            XmlElement id = doc.CreateElement("id");
            id.SetAttribute("userName", usernameTxb.Text);
            id.SetAttribute("passWord", passwordTxb.Text);
            XmlElement name = doc.CreateElement("Name");
            name.InnerText = nameTxb.Text; 
            XmlElement age = doc.CreateElement("Age");
            age.InnerText = ageTxb.Text;
            XmlElement Country = doc.CreateElement("Country");
            Country.InnerText = countryTxb.Text;
            id.AppendChild(name);
            id.AppendChild(age);
            id.AppendChild(Country);
            root.AppendChild(id);
            doc.AppendChild(root);

            // Get the object used to communicate with the server.  
            FtpWebRequest request = (FtpWebRequest)WebRequest.Create("ftp://users.skynet.be");
            request.Method = WebRequestMethods.Ftp.UploadFile;
            request.UsePassive = false;
            // This example assumes the FTP site uses anonymous logon.
            request.Credentials = new NetworkCredential("fa490002", "password");
            // Copy the contents of the file to the request stream.  
            StreamReader sourceStream = new StreamReader();
            byte[] fileContents = Encoding.UTF8.GetBytes(sourceStream.ReadToEnd());
            sourceStream.Close();
            request.ContentLength = fileContents.Length;
            Stream requestStream = request.GetRequestStream();
            requestStream.Write(fileContents, 0, fileContents.Length);
            requestStream.Close();
            FtpWebResponse response = (FtpWebResponse)request.GetResponse();
            response.Close(); 

            MessageBox.Show("Created SuccesFully!");
            this.Close();

but i always get an error of the streamreader path, what do i need to place there ? the meening is, creating an account and when i press the button, an xml file is saved to, ftp://users.skynet.be/testxml/ the filename is from usernameTxb.Text + ".xml".