首先安装VS.net2005,2003应该是不可以的。
然后安装Atlas插件，可在以下地址下载
http://www.microsoft.com/downloads/details.aspx?FamilyId=D746076A-3352-4407-B9D5-832BA4DFFC7B&displaylang=en
例子：
在VS2005中新建一个WebSite,添加一个aspx页面和asmx的webservice类。
在webservice类中添加一个带参数和返回值得方法，比如 public string HelloWorld(string query) 这样的，为的是在aspx页面中调用。
在aspx页面中添加一段
<atlas:ScriptManager runat=server ID="scriptManager">
<Services>
<atlas:ServiceReference Path="HelloWorldService.asmx" />
</Services>
</atlas:ScriptManager>
可以看出Path那儿就是你写的那个webservice类。
完整aspx代码如下：
<%@ Page Language="C#" Title="Atlas Script Walkthrough" AutoEventWireup="true" CodeFile="AtlasScript.aspx.cs" Inherits="AtlasScript" %>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"><html xmlns="http://www.w3.org/1999/xhtml" ><head runat="server"> <title>Untitled Page</title> <atlas:ScriptManager runat=server ID="scriptManager"> <Services> <atlas:ServiceReference Path="HelloWorldService.asmx" /> </Services> </atlas:ScriptManager> <style type="text/css">
body { font: 11pt Trebuchet MS;
body 
font-color: #000000; padding-top: 72px;
text-align: center } .text { font: 8pt Trebuchet MS }
</style> </head> <body> <form id="Form1" runat="server"> <div> Search for <input id="SearchKey" type="text" /> <input id="SearchButton" type="button" value="Search" onclick="DoSearch()" /> </div> </form> <hr style=" 300px" /> <div> <span id="Results"></span> </div> </body></html><script type="text/javascript">function DoSearch(){ var SrchElem=document.getElementById("SearchKey"); HelloWorldService.HelloWorld(SrchElem.value,OnRequestComplete);}function OnRequestComplete(result){ var RstElem=document.getElementById("Results"); RstElem.innerHTML=result;}</script>using System;using System.Web;using System.Collections;using System.Web.Services;using System.Web.Services.Protocols;/// <summary>/// Summary description for HelloWorldService/// </summary>[WebService(Namespace = "http://tempuri.org/")][WebServiceBinding(ConformsTo = WsiProfiles.BasicProfile1_1)]public class HelloWorldService : System.Web.Services.WebService { public HelloWorldService () { //Uncomment the following line if using designed components //InitializeComponent(); } [WebMethod] public string HelloWorld(string query) { string inputString = Server.HtmlEncode(query); if (!String.IsNullOrEmpty(inputString)) { return String.Format("Hello you queried for {0}.The current time is {1}", inputString, DateTime.Now); } else { return "The queried string is null or empty"; } } }webservice类代码如下：