求一段VBS代码，挺有难度的哦！该怎么解决

求一段VBS代码，挺有难度的哦！！！
求一段VBS代码，挺有难度的哦！！！

运行后，每隔一分钟查看一下 http://wpa.qq.com/pa?p=1:123456:4

这个网址（当然，不能调用IE之类的，不能出现什么窗口），（打开后是一个GIF图片，如果QQ在线，则为1.27KB，不在线则为600字节。）

当为1.27KB时则运行OnLine.bat，并依然每隔1分钟执行一次检查，直到检测为600字节（即不在线时）再运行NotOnLine.bat 。然后还是照样每隔1分钟执行一次检查，再次等到为1.27KB时再次运行OnLine.bat，……

如此往复循环。

谢谢！！

[解决办法]

VBScript code

Dim Http As Variant    Dim b As Variant    Dim fso As Variant    Dim BeginTime As Variant    Dim objShell As Variant        Set objShell = CreateObject("Wscript.Shell")        Set Http = CreateObject("MSXML2.XMLHTTP")        Do            BeginTime = Timer        While Timer < BeginTime + 60                DoEvents        Wend                Http.Open "GET", "http://wpa.qq.com/pa?p=1:123456:4", False        Http.Send        If Http.readystate <> 4 Then              Exit Function        End If                Set objstream = CreateObject("ADODB.Stream")        objstream.Type = 1        objstream.Open        Set fso = CreateObject("Scripting.FileSystemObject")        If Http.Status = 200 Then            objstream.Write Http.responseBody            If fso.FileExists("d:\QQ.jpg") Then                Call fso.DeleteFile("d:\QQ.jpg", True)            End If            objstream.SaveToFile "d:\QQ.jpg"                        Set f = fso.GetFile("d:\QQ.jpg")            If f.Size = 600 Then                objShell.Run "cmd /c NotOnLine.bat", 1                'objShell.Run "notepad", 1            ElseIf Round(f.Size / 1024, "0.00") = 1.27 Then                objShell.Run "cmd /c OnLine.bat", vbHide            End If                        objstream.Close            Set objstream = Nothing            Set fso = Nothing                   End If    Loop