Norton Internet Security Install Question

I currently have Norton Internet Security 2008 installed with Vista.  I just purchased the Internet Security 2009 CD.  During the install will the 2009 version automaticly remove the 2008 program?  Do I need to Unistall the 2008 Program?  If so, how is this done?  Also, the Internet Security 2008 version has worked well.  Will the new install of the 2009 program keep the old settings of the 2008 or do I have to reset all options?

 

Thanks

 

macdon221