Why not try the new Microsoft Security Essentials?
It's engine is the same as the ForeFront Security Suite used at Microsoft. ANd yes, it's free. The only catch is you have to be running a legit copy of Windows. It's lightweight, simple to use, and only gets in the way if something bad is about to happen.
It's engine is the same as the ForeFront Security Suite used at Microsoft. ANd yes, it's free. The only catch is you have to be running a legit copy of Windows. It's lightweight, simple to use, and only gets in the way if something bad is about to happen.