How do I convert the following cod from Early bind to Late bind?

Public Sub ChartToPowerPoint()
Dim PPApp As PowerPoint.Application
Dim PPPres As PowerPoint.Presentation
Dim PPSlide As PowerPoint.Slide
Dim NewIndex As Integer
Dim ChartName As String
ChartName = ActiveSheet.Name
ActiveSheet.ChartObjects(ChartName).Activate
ActiveChart.ChartArea.Select
ActiveChart.CopyPicture Appearance:=xlScreen, Size:=xlScreen, Format:=xlBitmap
Set PPApp = GetObject(, "Powerpoint.Application")
Set PPPres = PPApp.ActivePresentation
PPApp.ActiveWindow.ViewType = ppViewNormal
NewIndex = PPPres.Slides.Count + 1
PPPres.Slides.Add(Index:=NewIndex, Layout:=ppLayoutBlank).Select
Set PPSlide =
PPPres.Slides(PPApp.ActiveWindow.Selection.SlideRa nge.SlideNumber)
PPApp.ActiveWindow.ViewType = ppViewSlide
PPSlide.Shapes.Paste.Select
PPApp.ActiveWindow.Selection.ShapeRange.Height = 303.5
PPApp.ActiveWindow.Selection.ShapeRange.Align msoAlignCenters, True
PPApp.ActiveWindow.Selection.ShapeRange.Align msoAlignMiddles, True
PPApp.ActiveWindow.ViewType = ppViewNormal
Set PPSlide = Nothing
Set PPPres = Nothing
Set PPApp = Nothing
End Sub