MaxMTU Registry Question

You must be using win95!
Did you also ask the question to retrieve this registry entry for 750?

Enumerate all subkeys of Nettrans until you find the right one. There is no way of telling in front which one is the right one.

I agree with the enumeration but how would i go about that, oh and i should add that you can have more then one TCP/IP driver installed, like having a network card along side of Dialup Network Adapter, which means there could be more then one MaxMTU, gotta find the one specifically for DUN.

Adjusted points to 105

HMM, 5 additional points.
Bindings can be found in HKEY_LOCAL_MACHINE\Enum\Network
Here you will find all the Network clients/protocols/services. The subkey Bindings connects the child to its parents.
So open MSTCP. In your example there could be two entries there 0000 and 0001. The first one can point to NETTRANS\0000 and the second one to NETTRANS\0003 for example (here you can bind the DHCP settings)
Now look in the subkey Bindings and find out to which services it is bound. Check in DUN is one of them.

HMM, 5 additional points.
Bindings can be found in HKEY_LOCAL_MACHINE\Enum\Network
Here you will find all the Network clients/protocols/services. The subkey Bindings connects the child to its parents.
So open MSTCP. In your example there could be two entries there 0000 and 0001. The first one can point to NETTRANS\0000 and the second one to NETTRANS\0003 for example (here you can bind the DHCP settings)
Now look in the subkey Bindings and find out to which services it is bound. Check in DUN is one of them.

Hehe ok you have any idea of how im gonna do that?

Hehe ok you have any idea of how im gonna do that?

How do you mean? Do you want me to write it for you or do you need functions to access the registry?

This is the code I use to manipulate the registry - it includes create/edit/query registry

'@@@@@@@@ Insert this Code into a Module @@@@@@@@

   Public Const REG_SZ As Long = 1
   Public Const REG_DWORD As Long = 4

   Public Const HKEY_CLASSES_ROOT = &H80000000
   Public Const HKEY_CURRENT_USER = &H80000001
   Public Const HKEY_LOCAL_MACHINE = &H80000002
   Public Const HKEY_USERS = &H80000003

   Public Const ERROR_NONE = 0
   Public Const ERROR_BADDB = 1
   Public Const ERROR_BADKEY = 2
   Public Const ERROR_CANTOPEN = 3
   Public Const ERROR_CANTREAD = 4
   Public Const ERROR_CANTWRITE = 5
   Public Const ERROR_OUTOFMEMORY = 6
   Public Const ERROR_ARENA_TRASHED = 7
   Public Const ERROR_ACCESS_DENIED = 8
   Public Const ERROR_INVALID_PARAMETERS = 87
   Public Const ERROR_NO_MORE_ITEMS = 259

   Public Const KEY_ALL_ACCESS = &H3F

   Public Const REG_OPTION_NON_VOLATILE = 0

   Declare Function RegCloseKey Lib "advapi32.dll" _
   (ByVal hKey As Long) As Long
   Declare Function RegCreateKeyEx Lib "advapi32.dll" Alias _
   "RegCreateKeyExA" (ByVal hKey As Long, ByVal lpSubKey As String, _
   ByVal Reserved As Long, ByVal lpClass As String, ByVal dwOptions _
   As Long, ByVal samDesired As Long, ByVal lpSecurityAttributes _
   As Long, phkResult As Long, lpdwDisposition As Long) As Long
   Declare Function RegOpenKeyEx Lib "advapi32.dll" Alias _
   "RegOpenKeyExA" (ByVal hKey As Long, ByVal lpSubKey As String, _
   ByVal ulOptions As Long, ByVal samDesired As Long, phkResult As _
   Long) As Long
   Declare Function RegQueryValueExString Lib "advapi32.dll" Alias _
   "RegQueryValueExA" (ByVal hKey As Long, ByVal lpValueName As _
   String, ByVal lpReserved As Long, lpType As Long, ByVal lpData _
   As String, lpcbData As Long) As Long
   Declare Function RegQueryValueExLong Lib "advapi32.dll" Alias _
   "RegQueryValueExA" (ByVal hKey As Long, ByVal lpValueName As _
   String, ByVal lpReserved As Long, lpType As Long, lpData As _
   Long, lpcbData As Long) As Long
   Declare Function RegQueryValueExNULL Lib "advapi32.dll" Alias _
   "RegQueryValueExA" (ByVal hKey As Long, ByVal lpValueName As _
   String, ByVal lpReserved As Long, lpType As Long, ByVal lpData _
   As Long, lpcbData As Long) As Long
   Declare Function RegSetValueExString Lib "advapi32.dll" Alias _
   "RegSetValueExA" (ByVal hKey As Long, ByVal lpValueName As String, _
   ByVal Reserved As Long, ByVal dwType As Long, ByVal lpValue As _
   String, ByVal cbData As Long) As Long
   Declare Function RegSetValueExLong Lib "advapi32.dll" Alias _
   "RegSetValueExA" (ByVal hKey As Long, ByVal lpValueName As String, _
   ByVal Reserved As Long, ByVal dwType As Long, lpValue As Long, _
   ByVal cbData As Long) As Long

   ' SetValueEx and QueryValueEx Wrapper Functions:

   Public Function SetValueEx(ByVal hKey As Long, sValueName As String, _
   lType As Long, vValue As Variant) As Long
       Dim lValue As Long
       Dim sValue As String
       Select Case lType
           Case REG_SZ
               sValue = vValue & Chr$(0)
               SetValueEx = RegSetValueExString(hKey, sValueName, 0&, _
                                              lType, sValue, Len(sValue))
           Case REG_DWORD
               lValue = vValue
               SetValueEx = RegSetValueExLong(hKey, sValueName, 0&, _
   lType, lValue, 4)
           End Select
   End Function

   Function QueryValueEx(ByVal lhKey As Long, ByVal szValueName As _
   String, vValue As Variant) As Long
       Dim cch As Long
       Dim lrc As Long
       Dim lType As Long
       Dim lValue As Long
       Dim sValue As String

       On Error GoTo QueryValueExError

       ' Determine the size and type of data to be read
       lrc = RegQueryValueExNULL(lhKey, szValueName, 0&, lType, 0&, cch)
       If lrc <> ERROR_NONE Then Error 5

       Select Case lType
           ' For strings
           Case REG_SZ:
               sValue = String(cch, 0)
   lrc = RegQueryValueExString(lhKey, szValueName, 0&, lType, _
   sValue, cch)
               If lrc = ERROR_NONE Then
                   vValue = Left$(sValue, cch - 1)
               Else
                   vValue = Empty
               End If
           ' For DWORDS
           Case REG_DWORD:
   lrc = RegQueryValueExLong(lhKey, szValueName, 0&, lType, _
   lValue, cch)
               If lrc = ERROR_NONE Then vValue = lValue
           Case Else
               'all other data types not supported
               lrc = -1
       End Select

QueryValueExExit:
       QueryValueEx = lrc
       Exit Function

QueryValueExError:
       Resume QueryValueExExit

End Function



'@@@@@@@@ Insert this Code into a Form @@@@@@@@

'*********************************************************************
' Create a new Registry Key
' - Call it like this
'   CreateNewKey "TestKey\SubKey1\SubKey2", HKEY_LOCAL_MACHINE
'
' This will create three-nested keys beginning with TestKey
' immediately under HKEY_LOCAL_MACHINE, SubKey1 subordinate
' to TestKey, and SubKey3 under SubKey2.
'

Private Sub CreateNewKey(sNewKeyName As String, lPredefinedKey As Long)
    Dim hNewKey As Long         'handle to the new key
    Dim lRetVal As Long         'result of the RegCreateKeyEx function
   
    lRetVal = RegCreateKeyEx(lPredefinedKey, sNewKeyName, 0&, _
                 vbNullString, REG_OPTION_NON_VOLATILE, KEY_ALL_ACCESS, _
                 0&, hNewKey, lRetVal)
    RegCloseKey (hNewKey)
End Sub

'*********************************************************************
' Set a Registry Key Value
' - Call it like this
'   SetKeyValue "TestKey\SubKey1", "StringValue", "Hello", REG_SZ
'
'  This will create a value of type REG_SZ called "SubKey1" with
'  the setting of "Hello." This value will be associated with the
'  key SubKey1 of "TestKey."
'

Private Sub SetKeyValue(sKeyName As String, sValueName As String, _
    vValueSetting As Variant, lValueType As Long)
   
    Dim lRetVal As Long         'result of the SetValueEx function
    Dim hKey As Long         'handle of open key

    'open the specified key
    lRetVal = RegOpenKeyEx(HKEY_CURRENT_USER, sKeyName, 0, _
                            KEY_ALL_ACCESS, hKey)
    lRetVal = SetValueEx(hKey, sValueName, lValueType, vValueSetting)
    RegCloseKey (hKey)
End Sub

'*********************************************************************
' Query the value of a key
' - Call it like this
'   QueryValue "TestKey\SubKey1", "StringValue"
'
'  This will display a message box with the current setting of
'  the "StringValue" value, and assumes that "StringValue" exists
'  in the "TestKey\SubKey1" key.  If the Value that you query
'  does not exist then QueryValue will return an error code of
'  2 - 'ERROR_BADKEY'.
'

Private Sub QueryValue(sKeyName As String, sValueName As String)
    Dim lRetVal As Long         'result of the API functions
    Dim hKey As Long         'handle of opened key
    Dim vValue As Variant      'setting of queried value

    lRetVal = RegOpenKeyEx(HKEY_CURRENT_USER, sKeyName, 0, _
        KEY_ALL_ACCESS, hKey)
    lRetVal = QueryValueEx(hKey, sValueName, vValue)
    MsgBox vValue             ' vValue stores the returned value
    RegCloseKey (hKey)
End Sub

I should note that the above code is taken straight from the knowledge base

Yeh, and also note that the above code does not do enumeration.