Try ESET NOD32 Antivirus V5 1 User 1 Year (PC). This antivirus software is awesome. I purchsed the V4 version and not long after ESET automatically updated it to the V5 version. Just do some research to see how good it really is. It leaves a small footprint on your computer, unlike Norton which just takes over your computer completely. I've used Norton in the past (never, NEVER again), I've aslo tried Kaspersky and McAfee, but ESET NOD32 blows them all away. I would also stay away from AVG too. Again just do some research. Hope this helps.