NIS1020 installation process

I currently have NIS2009 installed. 

 

a) Can I install NIS2010 simply by inserting the CD and installing NIS2010 on top of NIS2009, or must I first uninstall NIS2009?

 

b) Is there any way of saving (or mapping from 2009 into 2010) existing settings, options, preferences, and allowed/blocked lists?

 

c) Does the NIS "optimize" function 'play nicely' with the similar function in Norton Utilities 2010?

 

 

Win XP Pro SP3