About XP support and common misspellings:
Support for Antivirus XP: Antivirus XP Support
Norton Antivirus and XP: Norton Antivirus for XP Support
Nortan: Nortan Antivirus Review
Norten: Norten Antivirus Review
Nortin: Nortin Antivirus Review
Nortons: Nortons Antivirus Review
MacAfee: MacAfee Antivirus Review
McAffee: McAffee Antivirus Review