Option Explicit

Dim perlProc As WshExec
Dim perlIn As TextStream
Dim perlOut As TextStream

Private Sub Workbook_Open()
  Dim wsh As New WshShell
  Set perlProc = wsh.Exec("C:\perl\bin\perl C:\perl\play\wordnet-ipc.pl ")
  Set perlIn = perlProc.StdIn
  Set perlOut = perlProc.StdOut
End Sub

Private Sub Workbook_BeforeClose(Cancel As Boolean)
  perlProc.Terminate
End Sub