The Best Tool Ever:  The Norton Removal Tool uninstalls all Norton 2007/2006/2005/2004/2003 products from your computer. Before you continue, make sure that you have the installation CDs or downloaded installation files for any Norton products that you want to reinstall. Also, if you use ACT! or WinFAX, back up those databases and uninstall those products.

Which prompts the question: Why would you want to reinstall a Norton product?

2000/XP/Vista: ftp://ftp.symantec.com/public/english_us_canada/removal_tools/Norton_Removal_Tool.exe
ME/9x: ftp://ftp.symantec.com/public/english_us_canada/removal_tools/Norton_Removal_Tool_9x.exe
via http://service1.symantec.com/SUPPORT/tsgeninfo.nsf/docid/2005033108162039