I need to know who offers the absolute best free antivirus. I am using advanced windows v2 personal edition which does not have antivirus. I have in the past used * Bitdefender ( a resource hog), nod 32, hijackthis, Kapersky, Spybot search and destroy(all were just to difficult to use). HELP, I need something easy and one that will scan for all or most known viruses. Most only scan for a select few viruses.