Hi,
I can launch some remote control by using: 
ant launch-remote-control
but I dont know how my script connect to hub?
I set up ant, selenium-grid on the same computer.
I have an grid.dll which is written by C# and run through NUnit.
The test data is read from xml file (ValidData.xml)
The example code is below :
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System;
using System.Xml;
using System.Text.RegularExpressions;
using System.Threading;
using NUnit.Framework;
using Selenium;
namespace Grid
{
    public class Class1
    {
        //User defined
    private string strURL = "http://gmail.com/";
    private string[] strBrowser = new string[3] { "*iehta", "*firefox", "*safari" };
   string hubAddress = "192.168.20.131"; // IP of my computer
    // System defined
    private ISelenium selenium;
    private StringBuilder verificationErrors;
    [SetUp]
    public void SetupTest()
    {
        selenium = new DefaultSelenium(hubAddress, 4444, this.strBrowser[1], this.strURL);// do i need to identify browser when I defined it when launching a remote control
        selenium.Start();
        verificationErrors = new StringBuilder();
    }
    [TearDown]
    public void TeardownTest()
    {
        try
        {
            selenium.Stop();
        }
        catch (Exception)
        {
            // Ignore errors if unable to close the browser
        }
        Assert.AreEqual("", verificationErrors.ToString());
    }
    private string[] name;
    [Test]
    public void LoginPassedTest()
    {
        try
        {
            XmlDocument doc = new XmlDocument();
            XmlNode docNode;
            doc.Load("ValidData.xml");
            docNode = doc["TestCase"];
            foreach (XmlNode node in docNode)
            {
                selenium.Open("/");
                selenium.WaitForPageToLoad("50000");
                selenium.Type("Email", node["username"].InnerText);
                selenium.Type("Passwd", node["password"].InnerText);
                selenium.Click("signIn");
                selenium.WaitForPageToLoad("100000");
                name = (selenium.GetText("//div[@id='guser']/nobr/b").Split('@'));
                try
                {
                    Assert.AreEqual(node["username"].InnerText, name[0]);
                    Assert.AreEqual("Sign out", selenium.GetText(":r6"));
                }
                catch (AssertionException e)
                {
                    verificationErrors.Append(e.Message);
                }
                selenium.Click(":r6");
            }
        }
        catch (AssertionException e)
        {
            verificationErrors.Append(e.Message);
        }
    }
}    
}
Step I run this script:
1.I build that script into DLL
2.I start hub by using command "ant lauch-hub"
3.I start 2 remote controls by using command :
      ant -Dport=5566 -Denvironment="*chrome" launch-remote-control
      ant -Dport=5577 -Denvironment="*iexplore" launch-remote-control
4.Then I open Nunit and load DLL (code above) and run
5.The NUNit doesnot respond anything.
I think there are some missing things but I dont know.
How can the test script (DLL) know which is sequence of remote control is selected to run the test????
Please help me!!
Thank you so much
Yui.