Need AV program today, wouldn't make much sense not to protect your system. In the late 80's to mid 90's is where the need for protection started to come out more. I started with NAV Dos, then NAV Win16 move up the NS then drop that because of the lousy hosing down the system plus the pest still got on. McAfee VirusScan, NAV Corp, NOD32, Fprot, RAV, AVIR, AVAST, PC Tools AV an etc. New system run Windows 7 Home Premium 64-bit OS including desktops, laptops and netbook have either Norton SI or McAfree. I find it strange that they don't come with MSE 64-bit since that is free from MS. But I guess marketing years fees to new customers must be huge profit shares to PC makers. I quickly remove these programs and install MSE 64-bit and sit back watch my so call fast system take off because those two AV suites make your system run slow. MSE doesn't slow you down. I use this program with IOBIT ASC Pro and that's it. For firewall I use Window 7 along with UAC feature.