Control LabView Executable Via Excel

[RandomWireMan]

Hello Everyone,

 I am trying to use  Excel to control a LabView executable ( send in data, get out data).

When browsing the net, I found exactly the thing that does it. Unfortunately I am too stupid to get how it works.

Here is the code that I found: http://forums.ni.com/ni/board/message?board.id=170&message.id=127040&query.id=268934#M127040

 The attached vba-code is this:

Private Sub Workbook_Open()
    Dim lvapp As MyLabVIEWServer.Application
    Dim vi As MyLabVIEWServer.VirtualInstrument
    Dim paramNames(1), paramVals(1)

    Set lvapp = CreateObject("MyLabVIEWServer.Application")
   
    Set vi = lvapp.GetVIReference("MyData.vi", "", True)
   
    Sheet1.Cells(1, 1) = vi.GetControlValue("Number")
   
    lvapp.Quit
End Sub
 

When issuing 'set lvapp = CreateObject(:::::)' the server.exe pops up.

But how does it know in the first place:

a) where to look

b) what to open, since the name isn't mentioned

Thanks for any hints on this 

RandomWireMan