Excel macro to ppt

I am currently working on a requirement where the excel shoud automate powerpoint..

For eg
Jan Feb Mar
East 10 30 40
West 13 14 45
South 34 35 33

Each row in the excel should generate a seperate slide.
So as per the data we r supposed to have 3 slides..

I was able to code in such a way it works for a single slide and get updated automatically when the months grows
But i am not able to get for more than one slide.Please can you give me a clue to continue..
I am really struck with this..

Sub Chart2PPT()
Dim objPPT As Object
Dim objPrs As Object
Dim objGraph As Object
Dim objDataSheet As Object
Dim rngData As Range
Dim intRow As Integer
Dim intCol As Integer

' excel chart data
Set rngData = Range("A1:J2")
' open powerpoint
Set objPPT = CreateObject("Powerpoint.application")
objPPT.Visible = True
' existing powerpoint pres
objPPT.Presentations.Open "C:\PPt\Call_volume.ppt"
' chart on slide 2
Set objPrs = objPPT.Presentations(1).slides(2)
' pointer to graph
Set objGraph = objPrs.Shapes(2).OLEFormat.Object.Application
' pointer to graphs data sheet
Set objDataSheet = objGraph.Datasheet
' transfer data
For intRow = 1 To rngData.Rows.Count
For intCol = 1 To rngData.Columns.Count
objDataSheet.Cells(intRow, intCol) = rngData.Cells(intRow, intCol)
Next
Next
' update to keep changes
objGraph.Update
objGraph.Quit
objPPT.Presentations(1).Save


' tidy up objects
Set rngData = Nothing
Set objGraph = Nothing
Set objDataSheet = Nothing
Set objPrs = Nothing
Set objPPT = Nothing
End Sub