Execute exe embedded in excel by passing parameters to the application

[beedistinct]

I'm using excel 2013 preview.
I need to embed this convert.exe (PDF to Text converter) in the excel file (as "Object 1" - done!) and then execute it via a VBA macro. I'm embedding it because I don't want to ship it separately with the excel file.
The code looks like below.

Private Sub Workbook_Open()
    Dim ws As Worksheet
    Dim oo As OLEObject
    
    Set ws = Sheets("Sheet1")
    Set oo = ws.OLEObjects("Object 1")
    
    If Not oo Is Nothing Then
        oo.Verb xlVerbPrimary
        Application.WindowState = xlMinimized
    End If
  
End Sub

There are 2 problems:
1. It opens a dialogue box asking me to run the application while I want it to run in the background.
2. I cannot figure a way to provide the pdf file path that it needs to convert to text