PowerPoint VB Automation: Save 2007 (pptx) to 2003 (ppt) format

Experts, I am automating the conversion of several powerpoint files from PowerPoint 2007 .pptx to 2003 format .ppt.  But I'm having problems with the "SaveAs" or "SaveCopyAs" command. Please help! My code is below:
Dim oPPT As Object
    Dim spath
    Dim opptdoc
    
    Set oPPT = CreateObject("PowerPoint.Application")
    spath = App.Path & "\test.pptx"
    sOutput = App.Path & "\slides\"
    
    Set opptdoc = oPPT.Presentations.Open(spath, , , False)
    With opptdoc
      .SaveCopyAs App.Path & "\New Format Copy.ppt" '<=== this does not convert it to 2003 format
      .SaveAs "Old Format Copy", ppSaveAsPowerPoint2 <=== I get an enumaration error
    End With     
    opptdoc.Close
    Set opptdoc = Nothing
    oPPT.Quit
    End

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frankmorrisonAsked:
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David LeeCommented:
Hi, frankmorrison.

There is no ppSaveAsPowerPoint2 format.  The choices are ppSaveAsPowerPoint7, ppSaveAsPowerPoint4, and ppSaveAsPowerPoint3.  I think you want the latter.
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frankmorrisonAuthor Commented:
I tried ppSaveAsPowerPoint3 and I'm getting the following error: "run-time error '-2147024809(80070057)': Presentation.SaveCopyAs: Invalid enumeration value.
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David LeeCommented:
Are you doing this from inside or outside of PowerPoint?  If outside, then have you defined a constant or set a reference to PowerPoint?
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JSRWilsonCommented:
Using LateBinding you cannot use PowerPoint Constants
Try:
.SaveAs "Old Format Copy",1
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