How to pass parameters to Windows Service?

I tried to pass parameters to a windows service.

Here is my code snippet:

class Program : ServiceBase
{
    public String UserName { get; set; }
    public String Password { get; set; }

    static void Main(string[] args)
    {
        ServiceBase.Run(new Program());
    }

    public Program()
    {
        this.ServiceName = "Create Users Service";
    }

    protected override void OnStart(string[] args)
    {
        base.OnStart(args);

        String User = UserName;
        String Pass = Password;
        try
        {
            DirectoryEntry AD = new DirectoryEntry("WinNT://" + Environment.MachineName + ",computer");

            DirectoryEntry NewUser = AD.Children.Add(User, "user");
            NewUser.Invoke("SetPassword", new object[] { Pass });
            NewUser.Invoke("Put", new object[] { "Description", "Test User from .NET" });
            NewUser.CommitChanges();
            DirectoryEntry grp;
            grp = AD.Children.Find("Administrators", "group");
            if (grp != null)
            {
                grp.Invoke("Add", new object[] { NewUser.Path.ToString() });
            }
            Console.WriteLine("Account Created Successfully");
            Console.ReadLine();
        }
        catch (Exception ex)
        {
            Console.WriteLine(ex.Message);
            Console.ReadLine();
        } 
    }

How do I pass UserName and Password to this windows service?