How to make ASP .NET Web Service work in a Shared Hosting?

Hello,

I am trying to put a basic Hello World Web Service in my Go Daddy Shared hosting.
It is a basic default Hello World Web Service that Visual Studio 2010
automatically generates: it works in my local web machine: i can invoke and can see the
xml.

I have transferred the Service1.asmx and the Service1.cs file( in the App_Code folder ).
I can view the web service page, but I cannot invoke the web service method, and as a result I cannot
see the xml file where the "Hello World" string will be in side the <string> element.

Please see screen shot ... We can see though we can see the web service page, there is no invoke button.

As the web page has suggested to change the name space, I have changed the namespace to my website address,
but still I cannot see or do an invocation and as a result cannot see the generated xml. My question is

1)  what should I do so that I can see the return xml value from the
web service?
2) what should I do so that I can render the data of the web service in a web page ( for example, in mywebservicepage.aspx)?

Please suggest.

App_Code/Service1.cs
==========================

using System;
using System.Collections.Generic;
using System.Web;
using System.Web.Services;

//[WebService(Namespace = "http://tempuri.org/")]
[WebService(Namespace = "http://www.mySiteName.com/")]
[WebServiceBinding(ConformsTo = WsiProfiles.BasicProfile1_1)]

public class Service1 : System.Web.Services.WebService
{
    public Service1 () {

        //Uncomment the following line if using designed components 
        //InitializeComponent(); 
    }

    [WebMethod]
    public string HelloWorld() {
        return "Hello World.................";
    }
    
}
---------------------------------------------------------------------------------------------
Service1.asmx
===================
<%@ WebService Language="C#" CodeBehind="~/App_Code/Service1.cs" Class="Service1" %>

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