ws.asmx

This is a book about vb.you could learn this from this book

<%@ WebService Language="VB" class="MyWebService" %>

Imports System
Imports System.Web.Services

public class MyWebService

	<WebMethod> _
	public Function  NameABook() As String
	
        	Return "Professional ASP.NET"
	
	End Function
	
End Class