Help with parametrize threading

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C#3.0

C#

ASP.NET

Hi Guys. i want to continuously send an At command request to some specified phone number which my datareader retreived from the Database, and keep executing using a thread until the last record in the datareader is reached. but i know really know how to pass the parameter withing the thread. here is the code i have presently.
lease guys i need any help from any one is welcome.

using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Data;
using System.Data.SqlClient;
using System.Text;
using System.IO;
using System.Net;
using System.Web.Services;
using System.Web.Security;
using System.Configuration;
using System.Threading;
using System.Data;
using System.Data.SqlClient;

public partial class VehicleEnforaGPSSchedule : System.Web.UI.Page
{
    protected void Page_Load(object sender, EventArgs e)
    {

    }

    public void Application_Init(Object sender, EventArgs e)
    {
        Threading();
    }

    public string GetConnectionString()
    {
        return ConfigurationManager.ConnectionStrings["EnforaTrackerConnectionString"].ConnectionString;
    }

    protected void Threading()
    {
         using(SqlConnection connection = new SqlConnection(GetConnectionString()))
        {
            string command = "SELECT [VehiclePhoneNumber] FROM [tbl_Vehicle_Data]";
            SqlCommand cmd = new SqlCommand(command, connection);
            cmd.CommandType = System.Data.CommandType.Text;
            SqlDataReader reader;
            try
            {
                connection.Open();
                reader = cmd.ExecuteReader();
                while (reader.Read())
                {
                    if (reader.HasRows)
                    {
                        for (int i = 0; i < reader.FieldCount; i++)
                        {
                            GistMeGps g = new GistMeGps();
                            Thread thread = new Thread(new ThreadStart(g.RequestGPSCoordinate(i.ToString())));
                            thread.Start(i.ToString());
                            return;
                        }
                    }
                }
            }
            catch (SqlException sqlex)
            {
                lblError.Text = sqlex.ToString();
            }
        }

    }
}

public class GistMeGps
{
    public void RequestGPSCoordinate(string phoneNo)
    {
        UriBuilder urlBuilder = new UriBuilder();
        urlBuilder.Host = "192.168.1.125";
        urlBuilder.Port = 8800;

        string PhoneNumber = phoneNo;
        string message = ">RSP=T;ID=011252000596969;AT$GPSRD=10<";

        urlBuilder.Query = string.Format("PhoneNumber=%2B" + PhoneNumber + "&Text=" + message);

        HttpWebRequest httpReq = (HttpWebRequest)WebRequest.Create(new Uri(urlBuilder.ToString(), false));
        HttpWebResponse httpResponse = (HttpWebResponse)(httpReq.GetResponse());
    }
}