This is the code based on 1" top and bottom margins.
Private Sub Report_Page()
Dim intMarkLength As Integer
Dim intPageHeight As Integer
intMarkLength = 100
intPageHeight = 9 * 1440
Me.Line (0, 0)-Step(intMarkLength, 0)
Me.Line (0, 0)-Step(0, intMarkLength)
Me.Line (Me.Width - intMarkLength, 0)-Step(intMarkLength, 0)
Me.Line (Me.Width, 0)-Step(0, intMarkLength)
Me.Line (0, intPageHeight)-Step(intMarkLength, 0)
Me.Line (0, intPageHeight - intMarkLength)-Step(0, intMarkLength)
Me.Line (Me.Width - intMarkLength, intPageHeight)-Step(intMarkLength, 0)
Me.Line (Me.Width, intPageHeight - intMarkLength)-Step(0, intMarkLength)
End Sub