Can NIS2009 Key (with Valid Subscription) be used with NIS2010.

Hi all, I understand that NIS2010 is released.

 

I have NIS2009 installed and has a valid subsciption.

 

I want to know :- Should I let Symantec Updater automatic UPDATE NIS2010 Or should I get rid of NIS2009 using NRT or Uninstall and then install NIS2010?

 

If I use NRT to remove NIS2009, than reinstall NIS2010.....will it except my NIS2009 Key?

 

Since my subscription are valid. Are there any information in this forum about updating (ie:- NIS2009 key can be used with NIS2010)?

 

What is the best way to get the update of NIS2010.

 

Thank you