Page Header
In the on format event of your page header include code based on the fields you want to change your header on.
eg.
Private Sub PageHeaderSection_Format(Cancel As Integer, FormatCount As Integer)
If Me.Page / 2 = Int(Me.Page / 2) Then
Me!Label1.Caption = "Even"
Else
Me!Label1.Caption = "Odd"
End If
End Sub
Will change the contents of you label based on page count.
You can use the same principle on your ole control.