Nigel,

Norton has a .bat file called vplogon .bat I use this as the logon batch file and at the end I call a KIX script to map drives etc.. If Norton is installed on your PC's and they are clients of one of your Norton Servers, configure the server to check for updates nightly say....0300 and set the clients to check the server for updates. If clients fail to connect to the server or lose their way, you can add this line to your KIX script to check and copy the GRC.dat file from the server to the client. This forces it to re-register.

code:

Select
Case InGroup ("Bethesda") = 1
If @inwin=1
If Exist ("C:\Documents and Settings\All Users\Application Data\Symantec\Norton AntiVirus Corporate Edition\7.5")
Shell '%COMSPEC% /C XCOPY "\\BETHESDA\Apps\NAV\GRC.DAT" "C:\Documents and Settings\All Users\Application Data\Symantec\Norton AntiVirus Corporate Edition\7.5" /D /H /I /R /Y > NUL'
EndIf
Else
If Exist ("C:\Program Files\Norton AntiVirus\")
Shell '%COMSPEC% /C XCOPY "\\BETHESDA\Apps\NAV\GRC.DAT" "C:\Program Files\Norton AntiVirus\" /D /H /I /R /Y > NUL'
EndIf
EndIf
Case InGroup ("Linthicum") = 1
If @inwin=1
If Exist ("C:\Documents and Settings\All Users\Application Data\Symantec\Norton AntiVirus Corporate Edition\7.5")
Shell '%COMSPEC% /C XCOPY "\\LINTHICUM\Apps\NAV\GRC.DAT" "C:\Documents and Settings\All Users\Application Data\Symantec\Norton AntiVirus Corporate Edition\7.5" /D /H /I /R /Y > NUL'
EndIf
Else
If Exist ("C:\Program Files\Norton AntiVirus\")
Shell '%COMSPEC% /C XCOPY "\\LINTHICUM\Apps\NAV\GRC.DAT" "C:\Program Files\Norton AntiVirus\" /D /H /I /R /Y > NUL'
EndIf
EndIf
Case InGroup ("Gaithersburg") = 1
Case InGroup ("Herndon") = 1

EndSelect