This works perfectly:

Sub HideZeroRows()
'to hide calculated items that equal zero
'hide worksheet rows that contain zeros
'by John Green
Dim rRow As Range
Application.ScreenUpdating = False
For Each rRow In ActiveSheet _
.PivotTables(1).DataBodyRange.Rows
If Application.Sum(rRow) = 0 Then
rRow.EntireRow.Hidden = True
End If
Next rRow
Application.ScreenUpdating = True
End Sub

There is a Macro that will **If no rows are
hidden - Run the Macro and If Rows Are hidden
UnHide All Rows. But how is this done?
Any assistance appreciated..