Confuse on Install NIS 2009

 

Do I need To uninstall NIS 2008 before I install NIS 2009?  

 

I purchase a new laptop with NIS 2008 with 60 days subscription with expired yesterday @ midnight. Instead of buying from Symantec website for $50,  I purchase NIS 2009 on sale @ costco for $30. On the user guide it has NO MENTION of removing old NIS 2008, however I see some people having problem with install.

Do I need the Norton Removal Tool?  Can I remove with Add/Remove programs from control panel?  Do I remove from start menu all programs uninstall? Which is best? Or I don't uninstall at all? Which is it?

 

BTW, I have Vista 64.