Norton removal tool did not erase all

hi,
bought new computer with Vista and Norton built in as security program, found out does not work with my accounting program peachtree at all, so went into Norton Removal tool and downloaded and ran the program. Did erase everything except under the firewall settings it says that Norton is turned on.
What can I do to completely get Norton off of my computer, I am not able to fully use my peachtree accounting program with this
thank you