Hi
not quite sure but you may try putting the following code in workbook
module (not in a standard module):
Private Sub Workbook_BeforePrint(Cancel As Boolean)
If Me.Worksheets("sheet1").Range("A1").Value < Date Then
Cancel = True
End If
End Sub
This tests cell A1 of sheet1.
Note: This is not bullet-proof as the user can disable macros.