怎么杀掉VB启动的ADSL拨号程序，并断开网络连接

如何杀掉VB启动的ADSL拨号程序，并断开网络连接?
通过shell( "C:\Program   Files\ChinaNet\VnetClient.exe ")启动一个拨号程序，该程序自动拨号连接

过一段时间后，想杀掉该拨号进程，并断开网络连接，该怎么做？

VB刚接触不久没，谢谢指教!

------解决方案--------------------
还是给你贴出来吧
新建一个模块,贴入以下代码:

Option Explicit
Public hRasConn As Long '¶¨ÒåÒ»¸öÖ¸ÏòRASµ÷ÓõÄÈ«¾Ö¾ä±ú
Public Const APINULL = 0&
Public Const UNLEN = 256
Public Const DNLEN = 15
Public Const PWLEN = 256
Public Const RAS95_MaxPhoneNumber = 128
Public Const RAS95_MaxEntryName = 256
Public Const RAS95_MaxCallbackNumber = RAS95_MaxPhoneNumber

Public Type RASDIALPARAMS95
dwSize As Long
szEntryName(RAS95_MaxEntryName) As Byte
szPhoneNumber(RAS95_MaxPhoneNumber) As Byte
szCallbackNumber(RAS95_MaxCallbackNumber) As Byte
szUserName(UNLEN) As Byte
szPassword(PWLEN) As Byte
szDomain(DNLEN) As Byte
End Type
'**********************************
'* RASµ÷ÓôíÎó´úºÅ *
'**********************************
Public Const NOT_SUPPORTED = 120&
Public Const RASBASEERROR = 600&
Public Const SUCCESS = 0&
Public Const ERROR_PORT_ALREADY_OPEN = (RASBASEERROR + 2)
Public Const ERROR_UNKNOWN = (RASBASEERROR + 35)
Public Const ERROR_REQUEST_TIMEOUT = (RASBASEERROR + 38)
Public Const ERROR_PASSWD_EXPIRED = (RASBASEERROR + 48)
Public Const ERROR_NO_DIALIN_PERMISSION = (RASBASEERROR + 49)
Public Const ERROR_SERVER_NOT_RESPONDING = (RASBASEERROR + 50)
Public Const ERROR_UNRECOGNIZED_RESPONSE = (RASBASEERROR + 52)
Public Const ERROR_NO_RESPONSES = (RASBASEERROR + 60)
Public Const ERROR_DEVICE_NOT_READY = (RASBASEERROR + 66)
Public Const ERROR_LINE_BUSY = (RASBASEERROR + 76)
Public Const ERROR_NO_ANSWER = (RASBASEERROR + 78)
Public Const ERROR_NO_CARRIER = (RASBASEERROR + 79)
Public Const ERROR_NO_DIALTONE = (RASBASEERROR + 80)
Public Const ERROR_AUTHENTICATION_FAILURE = (RASBASEERROR + 91)
Public Const ERROR_PPP_TIMEOUT = (RASBASEERROR + 118)

'//////////////////////////////////////////////////////////////////////
'Public Const RAS95_MaxEntryName = 256
Public Const RAS95_MaxDeviceName = 128
Public Const RAS_MaxDeviceType = 16

Public Type RASCONN95
'set dwsize to 412
dwSize As Long
hRasConn As Long
szEntryName(RAS95_MaxEntryName) As Byte
szDeviceType(RAS_MaxDeviceType) As Byte
szDeviceName(RAS95_MaxDeviceName) As Byte
End Type
'/////////////////////////////////////////////////////////////////////////////////


'**********************************
'* RAS API ÉùÃ÷ *
'**********************************
Public Declare Function lstrcpy Lib "kernel32 " Alias "lstrcpyA " (lpString1 As Any, ByVal lpString2 As String) As Long
Public Declare Function RasDial Lib "RasApi32.DLL " Alias "RasDialA " (lpRasDialExtensions As Any, ByVal lpszPhonebook As String, lprasdialparams As Any, ByVal dwNotifierType As Long, lpvNotifier As Long, lphRasConn As Long) As Long
Public Declare Function RasHangUp Lib "RasApi32.DLL " Alias "RasHangUpA " (ByVal hRasConn As Long) As Long
Public Declare Function RasEnumConnections Lib "RasApi32.DLL " Alias "RasEnumConnectionsA " (lprasconn As Any, lpcb As Long, lpcConnections As Long) As Long


Public Function AddConnection(strNewEntryName As String, strNewPhoneNumber As String, strNewCallbackNumber As String, strNewUsername As String, strNewPassword As String, strNewDomain As String) As Integer