...first. Although the new program is designed to automatically uninstall the previous version, it's always better to clean things out first...You didn't mention which version you have currently installed, but check the links below (Note this statement toward the bottom of the first link: (Why use SYMClean:
Norton SystemWorks is not intended to be installed over the older versions of NSW):
Using The Norton System Works Clean Up Utility
How to uninstall Norton AntiVirus 2002/2003
How To Completely Remove Norton AntiVirus 2004 And Then Reinstall The Program
Hope this helps.
When you install a new version do you have to uninstall the old version first, or will it just over write the old version?