11-20-2010 04:14 PM - edited 11-20-2010 04:14 PM
Welcome to the Norton Community. Can you tell us what version of NAV 2010 you have from Help & Support > About? Also what version of Windows do you have and is it 32 or 64 bit?
If everyting is working well for you on NAV 2010, then no you do not have to uninstall it before installing NIS 2011.
As a precaution you can make note of your product key which you can find in your Norton Account.
You can download the English version of NAV 2011 from here. Please let me know if you need a different language and I will provide an alternate link for you.
You should disconnect yourself from the Internet during the upgrade and reconnect back to the Internet once NAV 2011 is instaled. After that please run live update (rebooting as requested) until it reports no more updates are needed.
Hope this helps and please let us know how it goes.