May I add a suggestion re: Anti-Virus s'ware ?

I very strongly recommend Avast ...

It is very 'powerful' and the updates are automatic for both virus definitions AND program updates...

It is very 'economical' in CPU and memory usage... And does NOT cause problems on a ShutDown of your OS...

Main tip with it is to always use the 'Advanced' display...


Oooh, and Adaware is excellent.
But, if you wisely elect to use the 'Pro' version, be cautious in your use of Adwatch... It does require some experience to use it properly and it can cause you considerable grief re: 'legitimate' alterations of your Registry settings.