I don't use my windows machine very often anymore, but I use Microsoft Security Essentials and Malwarebytes: https://www.malwarebytes.org https://www.malwarebyt

I don't use my windows machine very often anymore, but I use Microsoft Security Essentials and Malwarebytes: https://www.malwarebytes.org https://www.malwarebytes.org which seem to compliment each other pretty decently, and neither ever seem to get in the way.