Powerpoint when slides load call an assistant balloon

[PoohsMate]

Can anyone help me please?
I've designed a 5 slide presentation and have been asked for a help box to appear when each slide loads with instructions relevant to the slide on view.
So far I have managed to get some general code but do not know how to call it.
Any assistance would be very much appreciated.
Kind regards
Bernard

 

[PoohsMate]

Update
I have now got the following code which works on my PC. Thanks to Badger101.
Problem:
When I try to run on any other PC (same versions of NT and PP) I have to open the VB Editor window before it will fire up. Can anyone help please?
Bernard
Sub OnSlideShowPageChange()
If SlideShowWindows(1).View.Slide.Name = "Slide3" Or SlideShowWindows(1).View.Slide.Name = "Slide5" Then
With Application.Assistant
.On = True
.Visible = True

With .NewBalloon
.Heading = "Navigate Slide."
.Text = "Left click on text which is underlined"
.Labels(1).Text = "Click OK to close this help."
.BalloonType = msoBalloonTypeNumbers
.Mode = msoModeModal
.Button = msoButtonSetOK
.Show
End With
.On = False
.Visible = False
End With
End If
End Sub

 

[PoohsMate]

The following activates the assistant and positions it top right of the screen.
Bernard
'Show the office assistant
Application.Assistant.Visible = True
'Move it to upper right area of the screen
Application.Assistant.Move xLeft:=900, yTop:=80