If you can't remove it using Add/Remove programs, try the manual removal method.
See - How to uninstall Norton AntiVirus 2000/2001/2002
How to uninstall Norton AntiVirus 2003 or Norton AntiVirus 2003 Professional Edition
i purchased a gateway PC in 2001. all software, including norton, was installed prior to shipping. i have restore disks only (fromgateway) need to remove the norton program to replace it with a new anti virus/firewall/spamblocker program. uninstall of norton is unsuccesful and i cannot use the new software until norton is removed. can anyone help me? Symantic no longer has information for this procedure and gateway cannot tell me how to uninstall the norton, says i have to contact norton. add/remove software will not remove norton, says file cannot be located. THANKS