Here's the best part, EMP GENERATOR KITS ARE AVAILABLE ONLINE!!!
http://www.plans-kits.com/plans/emp.html

If you wanna go homebrew, check this out:

http://www.airpower.maxwell.af.mil/a...pp/apjemp.html

The above also has some information on hardening against, and deploying emp weapons if you manage to pick up an old Mig21 on Ebay.

I always enjoyed the net stories you read about saying that hackers would make emp weapons out of radioshack parts and then they would black mail banks for millions.

One thing you want to think about before you spend all your money on hardening your PC from EMP blasts is how your going to interract with it. Any kind of wire going in or out of your faraday cage is a road for the pulse. What this means for the small timer is no power, keyboard, mouse, monitor, network connections or anything for that matter. That is unless you put a fuse on each connector so that massive pusle pops the fuse in a heartbeat. I could be wrong, but seems rather pointless, as your probably in deeper **** than a broken computer if its EMPs doing.