Need advice on upgrading NAV

Currently running NAV 2005 (yeah, I know, it's a dinasaur), on Windows XP. I entered my info into the upgrade link on Norton and the only upgrade options were:

 

1. NAV 2010

2. NAV 360

3. Renew existing subscription

 

 I was kinda thinking about NIS because of an issue I had here:

http://community.norton.com/norton/board/message?board.id=nis_feedback&thread.id=81248

 

So, 2 questions.

 

1. Should I pick #1 or 2 from above, or scrap the upgrade idea and spring for NIS and get the 3-fer package? (I have 2 other laptops I could put it on that have more up to date AV, not Norton), or is there another option like NAV 2009?

 

2. If I opt for anything other than the upgrade, I know I have to uninstall the old NAV 2005. I know there were some issues in the past with it not uninstalling properly, so how would I best go about doing that; add/delete programs or is there an uninstaller for 05?

 

Sorry, just had question #3 pop in my head.

 

3. If I do the non-upgrade, do I uninstall the old one  before or after I download the new one?

 

If it helps, I'm not necessarily looking for the cheapest way but I don't want to throw money away either.