怎么调用mstscax

类型库文件：
C:\WINDOWS\system32\mstscax.dll

数字签名：{3523c2fb-4031-44e4-9a3b-f1e94986ee7f}
说明： Microsoft Terminal Services Control Type Library。

MSTSCLib->IMsRdpClientNonScriptable.SendKeys()

这个我怎么才能调用上啦.

   MsRdpClient.Server = "127.0.0.1"
   MsRdpClient.AdvancedSettings2.RDPPort = "3389"

   MsRdpClient.UserName = "administrator"
   MsRdpClient.AdvancedSettings2.ClearTextPassword = "1234"
   'MsRdpClient.Domain = "momoca"

   MsRdpClient.FullScreen = False
   MsRdpClient.DesktopWidth = 800
   MsRdpClient.DesktopHeight = 600
   MsRdpClient.Width = 12000
   MsRdpClient.Height = 9000
   'MsRdpClient.SecuredSettings.StartProgram = "%SystemRoot%\explorer.exe"
   'MsRdpClient.SecuredSettings.StartProgram = "%SystemRoot%\system32\notepad.exe"
   'MsRdpClient.IMsRdpClientNonScriptable.SendKeys()'这个不好用.希望大家帮助呀.

   MsRdpClient.AdvancedSettings2.RedirectDrives = True
   MsRdpClient.AdvancedSettings2.RedirectPrinters = True
   MsRdpClient.AdvancedSettings2.RedirectPorts = True
   MsRdpClient.AdvancedSettings2.RedirectSmartCards = True

   MsRdpClient.FullScreenTitle = "momoca"

   MsRdpClient.Connect --------------------编程问答-------------------- 有没有公共接口的，或者你还缺少其他文件

补充：VB ,  COM/DCOM/COM+