Quarantined Viruses and NIS 2010 Update

Hi,

 

I'm planning to update to NIS 2010 from NIS 2009 via the Norton web update.

Two viruses are quarantined in my NIS 2009 now (I'm running Windows XP). What happens to the viruses when I update to NIS 2010?

Is there any potential security issue I should be aware of?

 

Thanks in advance.