Chris and Jerzy.
Jerzy Czopik wrote:
is an option to switch the warnings (not the protection) out.
I'm sorry not to beeing able to provide you the direct acces to that function, but I have NIS Professional in German...
Just try to ask the Norton help or, when the warning appears, let the program show you more details about it.
In German this would be (free translated into English):
If you clik on these items in Norton main window, then you can configure them.
OTOH I have SP2 for Win XP, installed over NIS and got no issues. I have not switches the Win XP firewall out.