关于XMLHTTP无法正确返回结果的问题。。

程序的意图是想通过XMLHTTP直接抓包得到考生的录取信息。
登录页面的表单信息如下：                    <form name="PglqcxActionForm" method="post" action="/ZKCX/PGLQCX/Action/PglqcxAction/Ck.do">
                      <tr>
                          <td bgcolor="#FFFFFF"><table width="80%" border="0" align="center" cellpadding="0" cellspacing="0">
                              <tr>
                                <td width="50%">&nbsp;</td>
                                <td width="2%">&nbsp;</td>
                                <td width="48%">&nbsp;</td>
                              </tr>
                              <tr>
                                <td height="40" align="right" class="ziti2">准考证号码:</td>
                                <td height="40">&nbsp;</td>
                                <td height="40" align="left"><input type="text" name="kh" value=""></td>
                              </tr>
                              <tr>
                                <td height="40" align="right" class="ziti2">查询密码:</td>
                                <td height="40">&nbsp;</td>
                                <td height="40" align="left"><input type="password" name="cxmm" value=""></td>
                              </tr>
                               <tr>
                                 <td align="center" class="ziti2" colspan="3">
                        <font color="red"></font>
                          </td>
                     </tr>
                              <tr>
                                <td>&nbsp;</td>
                                <td>&nbsp;</td>
                                <td>&nbsp;</td>
                              </tr>
                              <tr>
                                <td align="right"><img src="../../Jsp/imaegs/Search.jpg" width="48" height="20" border="0" style="cursor:pointer" onclick="submit();" /></td>
                                <td>&nbsp;</td>
                                <td align="center"><img src="../../Jsp/imaegs/index_r5_c5.jpg" width="47" height="20" border="0" style="cursor:pointer" onclick="reset();"/></td>
                              </tr>
                          </table></td>
                        </tr>
                            </form>程序的代码如下：
   Set XMLObject = CreateObject("Microsoft.XMLHTTP")
   
   SendStr = "kh=" & EncodeToBytes(zkzh) & "&cxmm=" & EncodeToBytes(cxmm)
   XMLObject.Open "POST", strQueryUrlLqcx, False
   XMLObject.setRequestHeader "Referer", strQueryUrlLqcx
   XMLObject.setRequestHeader "CONTENT-TYPE", "application/x-www-form-urlencoded"
   XMLObject.setRequestHeader "CONTENT-LENGTH", Len(SendStr)
   
   XMLObject.send SendStr
   ReturnByte = XMLObject.responseBody
   ReturnText = bytes2BSTR(ReturnByte)直接通过人工方式登录得到的HTML代码，如果被录取：
  <td height="30" align="left"  colspan="4"><font color="red">恭喜您！您已经被录取，录取结果为:</font></td>
                            </tr>                            <tr>
                              <td colspan="4" align="center"><table width="100%" border="0" cellpadding="0" cellspacing="1" bgcolor="#000000">
                                
                                
                                  <tr>
                                    <td align="center" bgcolor="#FFFFFF">批次</td>
                                    <td align="center" bgcolor="#FFFFFF">层次</td>
                                    <td align="center" bgcolor="#FFFFFF">学校</td>
                                    <td align="center" bgcolor="#FFFFFF">专业</td>
                                  </tr>
                                  <tr>
                                    <td align="center" bgcolor="#FFFFFF">(2)一本A类</td>
                                    <td align="center" bgcolor="#FFFFFF">(1)本科</td>如果未被录取：
  <h1>
提示：
</h1>
非常抱歉，您暂时还没有录取信息！
但用上面那段代码来获取时，不论考生是否被录取，均显示未被录取的信息
这个问题一直困扰着我