Recently our business has received some emails with viruses attached to it. Apparently we are on someone's list. Anyways, what programs would our resident computer tech's on the board recommend to eliminate and catch in real time Spyware, Viruses, Etc.? And, how much is too little? How much is too much? I had a virus checker that I liked, but it didn't play nice with other programs on my computer, so I am hesitant on installing too much. Thanks!