system
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Emma: I beleive the proper procedure would be:
- Down load avast! to desktop (or disc).
- Go offline
- uninstall All Norton and its components (other threads say how)
- install avast!
- go online and update avast!
If you had the Norton Suite then you also need to add Ad-AwareSE (or similar), Spybot S&D (or similar) and a firewall like ZoneAlarm (or similar) before you go back online. Other threads (especially the General and off-topic) cover these issues. Welcome back to the avast! fold.