To remove Norton AntiVirus 2003, 2004, 2005, 2006, 2007, 2008, 2009 ACT! and Winfax from your computer, download the Norton Removal Tool. If you plan on reinstalling Norton products, make sure you write down the product key before you remove it. You can find better and free security products that wont slow your computer down HERE.
If you use Windows 98 or Windows ME, download the 9x version.