Todd, you might as well buy rad and chem suits. :P

A faraday cage, for those that don't know, is a big metal box, which is grounded. Anything in the box is fully self contained. That way, when an external electromagnetic signal (like an EMP pulse or your neighbor's pirate radio broadcast) passes by, and is turned into an electrical impulse, it just goes in a safe direction. Of course, a big enough pulse won't matter.

Oh, and most of us own a faraday cage, we just don't know it. <img src="/images/graemlins/smile.gif" alt="" /> If your computer has a metal frame and metal side panels, rather than the flimsy, cheapy, artsy fartsy all plastic jobs, it will function as a faraday cage. But that is becuase older computers made a lot more noise from an EM point of view, and it had to be contained.