Got Norton AV 2010 what about malware ? How to improve speed ?

 Hey Norton fans, HNY thats happy new year for those.

 

             I recently installed Norton AV 2010 does this include malware ?  if not best way to rid for performance.

Currently   Intel T2060  1.6GHz and 1 meg ram running Window Vista   also

 

 For speed should I add a meg of ram ?   also  After install should I turn off features not needed you know

tweak for speed ?