创建一个新的，空的Element节点。不知道是不是你想要的。

<XML ID="theXMLisland" src="new.xml">
</XML>
</body>  
</HTML>

new.xml

<?xml version="1.0" encoding="gb2312"?>
<HotelList>
<Hotel>
<Name>四海大酒店</Name>
<Address>海魂路1号</Address>
<HomePage>www.sihaohotel.com.cn</HomePage>
<E-Mail>master@sihaohotel.com.cn</E-Mail>
<TelePhone>(0989)8888888</TelePhone>
<Grade>五星级</Grade>
</Hotel>
<Hotel>
<Name>五湖宾馆</Name>
<Address>东平路99号</Address>
<HomePage>www.wuhu.com.cn</HomePage>
<E-Mail>web@wuhu.com.cn</E-Mail>
<TelePhone>(0979)1111666</TelePhone>
<Grade>四星级</Grade>
</Hotel>
<Hotel>
<Name>“大沙漠”宾馆</Name>
<Address>留香路168号</Address>
<HomePage>www.dashamohotel.com.cn</HomePage>
<E-Mail>master@dashamohotel.com.cn</E-Mail>
<TelePhone>(0989)87878788</TelePhone>
<Grade>五星级</Grade>
</Hotel>
<Hotel>
<Name>“画眉鸟”大酒店</Name>
<Address>血海飘香路2号</Address>
<HomePage>www.throstlehotel.com.cn</HomePage>
<E-Mail>chuliuxiang@throstlehotel.com.cn</E-Mail>
<TelePhone>(099)9886666</TelePhone>
<Grade>五星级</Grade>
</Hotel>
</HotelList>

<Table align=center width="100%"><TR><TD align="center">
   <h5><b><font size="4" color="#FF0000">HTML中的XML数据岛记录编辑与添加</font></b></h5>
  </TD></TR></Table>
<HR>
酒店名称：<input type=text datasrc=#theXMLisland DataFLD=NAME size="76"><BR>
　　地址：<input type=text datasrc=#theXMLisland DataFLD=Address size="76"><BR>
　　主页：<input type=text datasrc=#theXMLisland DataFLD=HomePage size="76"><BR>
电子邮件：<input type=text datasrc=#theXMLisland DataFLD=E-Mail size="76"><BR>
　　电话：<input type=text datasrc=#theXMLisland DataFLD=TelePhone size="76"><BR>
　　级别：<input type=text datasrc=#theXMLisland DataFLD=Grade size="76"><HR>
<input id="first" TYPE=button value="<<　第一条记录" onclick="theXMLisland.recordset.moveFirst()">
<input id="prev" TYPE=button value="<上一条记录" onclick="theXMLisland.recordset.movePrevious()">  
<input id="next" TYPE=button value="下一条记录>" onclick="theXMLisland.recordset.moveNext()">  
<input id="last" TYPE=button value="最后一条记录>>" onclick="theXMLisland.recordset.moveLast()">&nbsp;  
<input id="Add" TYPE=button value="添加新记录" onclick="add()">

<XML ID="theXMLisland" src="new.xml">
</XML>

</body>  
</HTML>

   'Set the source file location
   'sourceFile = Request.ServerVariables("APPL_PHYSICAL_PATH") & "\ch6\contacts2.xml"

   Set xObj1 = Server.CreateObject("Microsoft.XMLDOM")
   Set xObj2 = Server.CreateObject("Microsoft.XMLDOM")
   
   'Loads the contacts file
   xObj1.load(Server.MapPath("contacts2.xml"))

   'Sets the document element as the current node
   Set rootNode = xObj1.documentElement
   
   'If no file loaded, then abort
   If Not IsObject(rootNode) Then
       Exit Function
   End If

   'Loads XMLCode string as XML into a new node
   xObj2.loadXML(XMLCode)
   Set newNode = xObj2.documentElement

   'Add the new node to the list
   Set currentNode=rootNode.appendChild(newNode)

   'Saves changes
   xObj1.save("contacts2.xml")
   
    Set xObj2 = Nothing
    Set xObj1 = Nothing

try{
    //if(doc.getElementsByTagName("name")!=request.getParameter("Name")){
     Element root=doc.getDocumentElement();
     Node node_Person=doc.createElement("Person");
     
   /*  Node node_id=(Node)doc.createElement("id");
     Node tmp1=doc.createTextNode("tmp1");
     tmp1.setNodeValue(ID);
     node_id.appendChild(tmp1);  */

     Node node_Name=doc.createElement("Name");
     Node tmp1=doc.createTextNode("tmp1");
     tmp1.setNodeValue(Name);
     node_Name.appendChild(tmp1);
  Node node_Gn=doc.createElement("Gn");
     Node tmp2=doc.createTextNode("tmp2");
     tmp2.setNodeValue(Price);               
     node_Gn.appendChild(tmp2);
     
     Node node_Dm=doc.createElement("Dm");
     Node tmp3=doc.createTextNode("tmp3");
     tmp3.setNodeValue(Author);
     node_Dm.appendChild(tmp3);
    
     Node node_Yy=doc.createElement("Yy");
     Node tmp4=doc.createTextNode("tmp4");
     tmp4.setNodeValue(Publisher);
     node_Yy.appendChild(tmp4);
                  
             
     node_Person.appendChild(node_Name);             
     node_Person.appendChild(node_Gn);           
     node_Person.appendChild(node_Dm);           
     node_Person.appendChild(node_Yy);
     //node_Person.appendChild(node_price);
     root.appendChild(node_Person);
     TransformerFactory tFactory=TransformerFactory.newInstance();
     Transformer transformer=tFactory.newTransformer();
     DOMSource source=new DOMSource(doc);
     StreamResult result=new StreamResult(new java.io.File(filename));
     transformer.transform(source,result);
  //  }
   //else{
    // out.println("这本书已存在,添加失败");
    //}
    }catch(Exception e){
        e.printStackTrace();
    }