Do I need NIS 2010 and spyware/malware protection?

I had NIS 2009 installed on my PC and a few weeks ago I started getting messages that said my PC had a virus.  I always backup my files to a flash drive so I just decided to reinstall my operating system to fix it fast.

 

Once I reinstalled my OS, I downloaded NIS 2010.  I was reading the forum and wondered if I also need these:

 


http://www.filehippo.com/download_malwarebytes_anti_malware/

http://www.filehippo.com/download_superantispyware/

If so, why?  Isn't the NIS 2010 that I paid for supposed to take care of this? 

 

I'm not very virus/malware/spyware knowlegeble so any help would be appreciated.

 

Thank,

Ami