I think your best bet is a Class Module in your Personal.xls
[All the names in the following example are just that, examples.]
To do this you would create a class module in the VBE of your Personal.xls
(insert / class module).
1) Name the module CLASS_PrintFooter
2) At the top of the class module put€¦

Option Explicit

Public WithEvents App_MyPrintFooter As Application

Private Sub App_MyPrintFooter _Workbook_BeforePrint(Cancel As Boolean)
With ActiveSheet.PageSetup
.LeftFooter = "&8" & _
LCase(ActiveWorkbook.FullName) & " " & ActiveSheet.Name
If .RightFooter = "" Then .RightFooter = "Page &P of &N"
End With
End Sub

3) At the top of the 'ThisWorkbook' module of the Personal.xls put...

Option Explicit

Dim AppClass As New CLASS_PrintFooter

Private Sub Workbook_Open()
Set AppClass.App_MyPrintFooter = Application
End Sub


This program is untried.

HTH,
Gary Brown


"TOMB" wrote:

I would like to create an Add-In which will place the filename into the
footer. I curently use a macro to do this, but I'd like to have this apply to
all files I open (unless I 'turn off' the Add-In).

The macro I currently use is below ....

Sub PrintWithFileNameInFooter()
With ActiveSheet.PageSetup
.LeftFooter = "&8" & _
LCase(ActiveWorkbook.FullName) & " " & ActiveSheet.Name
If .RightFooter = "" Then .RightFooter = "Page &P of &N"
End With
End Sub


Thanks - -TB- -