How do I run a Powerpoint slide show using visual basic code?

The goal is to run a powerpoint slide show by clicking a command button on a microsoft access database form.  I have attempted this several times with different pieces of code from searching online.  If there is an easier way to do it using just a macro and no code, then I am not that well-versed.  Here are some of the samples of code I have used with several different error messages:
  Function OpenPPTFile() As Boolean

    Dim stAppName As String

    stAppName = "C:\Documents and Settings\Blang\My Documents\Powerpointz\BLangBomberz.ppt"
    Shell stAppName, vbNormalFocus

    OpenPPTFile = True

End Function

Private Sub startSlideShow()

         Dim pptObject As PowerPoint.Application
         Dim pptPres As PowerPoint.Presentation
         Set pptObject = CreateObject("PowerPoint.Application")
         pptObject.Visible = True
         Set pptPres = pptObject.Presentations.Open("C:\Documents and Settings\Blang\My Documents\Powerpointz\BLangBomberz.ppt")
         pptObject.ActivePresentation.SlideShowSettings.Run
         Set PPT = Nothing

End Sub

The error I am getting is that the property is not set for automation operations.  Any help would be appreciated.  
blang476Asked:
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Rick_RickardsConnect With a Mentor Commented:
Try this...


Private Sub startSlideShow()
    Dim objPPT As Object
    Set objPPT = CreateObject("PowerPoint.Application")
    objPPT.Visible = True
    objPPT.Presentations.Open ("C:\Documents and Settings\Blang\My Documents\Powerpointz\BLangBomberz.ppt")
    objPPT.ActivePresentation.SlideShowSettings.Run
    Set objPPT = Nothing
End Sub

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GlennaShawCommented:
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blang476Author Commented:
Perhaps my problem is in the Macro itself.  When I RunCode, what exactly am I to put in the Function Name?  I tried both startSlideShow and startSlideShow(), none of which were successful.  I am getting the same automation error as before.  I think it needs to be a Function and not a Sub, but not sure.  Thanks,
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blang476Author Commented:
Never mind, I figured it out; it was in the macro itself.  the following code works though:
Private Sub startSlideShow()
    Dim objPPT As Object
    Set objPPT = CreateObject("PowerPoint.Application")
    objPPT.Visible = True
    objPPT.Presentations.Open ("C:\Documents and Settings\Blang\My Documents\Powerpointz\BLangBomberz.ppt")
    objPPT.ActivePresentation.SlideShowSettings.Run
    Set objPPT = Nothing
End Sub
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blang476Author Commented:
You must define the code as a Function and not a Sub procedure...
Thanks
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Rick_RickardsCommented:
Glad you got it working.  For what it's worth the code illustrated is version independent because it relies on Late Binding.  Thus, you need not be concerned about which version of Power Point the user has, it will simply look to and run whichever version the user happens to have installed.

Rick
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