Something like this

Private Sub Workbook_BeforePrint(Cancel As Boolean)

   With ActiveSheet.PageSetup

       .LeftFooter = "Some text"
       .CenterFooter = "Some text"
       .RightFooter = "Some text"
   End With
End Sub

'This is workbook event code.
'To input this code, right click on the Excel icon on the worksheet
'(or next to the File menu if you maximise your workbooks),
'select View Code from the menu, and paste the code