check if dialup networking is installed?

In older OS's like win95
dial up networking is by default not installed.

i am developing a web based application I want to check whether dial-up networking and tcp/ip are is installed and if not then i should show the windows "Install Dial-Up Networking" dialog box.

is it possible ? Any API ?

If you're using the VB-WinSock Control I can't help you because I prefer only the API alternative, but that's really tricky! So, if you're using API, tell me! I would paste the code here, but I don't have it at the time. In some hours I'll take a look at it!

The WSAStartup() Function starts the WinSock Stuff in your appz, if it fails it return an error:
But remember: This is the first you have to do when using the WinSock-API but you much much more code if you want to write a client or server! You should search the web for such appz!

Code:

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Public Declare Function WSAStartup Lib "wsock32.dll" (ByVal wVR As Long, lpWSAD As WSADataType) As Long

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sub ????()
  If WSAStartup(257, StartupData) Then
    MsgBox "Winsock is not installed or Setup properly.", vbCritical, "Winsock Error"
    End
  End If
 
  'here is much more init code....

end sub

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