If your product is among:

NAV for Lotus Notes (Intel)
NAV for MS Exchange (Intel)
NAV 4.0, 5.0 and 2000 for Win9x
NAV 4.0, 5.0 and 2000 for WinNT
NAV 2000 for Win2000
NAV 2001 for Win9x/NT/2000/Me
NAV for Firewalls 1.5 or higher
pcAnywhere32 7.5 and higher for WinNT
Norton Utilities for Windows 95/98 (all versions)
Norton SystemWorks (all versions) 
You can use:
 
1031i32.exe
 October 31
 November 1
 2.43 MB