How can I modify this Excel macro to delete a row if the A field is blank, and the B field is 0?

I want to modify this macro so that if the A field is blank, and the corresponding B field has '0' in it, or '0.00', then delete the entire row.


  Sub Step2_DeleteBlankRows()

            'Deletes the entire row within the selection if the ENTIRE row contains no data.

            'We use Long in case they have over 32,767 rows selected.

            Dim i As Long

                'We turn off calculation and screenupdating to speed up the macro.

                With Application

                    .Calculation = xlCalculationManual

                    .ScreenUpdating = False

                'We work backwards because we are deleting rows.

                For i = Selection.Rows.Count To 1 Step -1

                    If WorksheetFunction.CountA(Selection.Rows(i)) = 0 Then

                        Selection.Rows(i).EntireRow.Delete

                    End If

                Next i

                    .Calculation = xlCalculationAutomatic

                    .ScreenUpdating = True

                End With

            End Sub