DuelBoxing Setup? I'm Sorry, I'm just retarded.

Ok, I am 14, so a little stupid when it comes to programming, but a little tech savvy. I have two computers side by side, and both have WoW, I also have two accounts. I want to run WoW on both screens, but Duelbox, control one, and have the other be the same, b/c I want to do 2x Shammys. How can I get it so I can use one keyboard and one mouse on both screens, controling one, and the other mirrors? I have read all the stickys, but its so confusing to me, and my screen is 1064X786 I think, Can someone please explain what I need to do for MY situation? I am sorry to post this noobish thread, I have read all of the tutorials, etc, and tried stuff out, but it just isn't working for me, I'm sorry again, and thanks for the help. Also, do I have to BUY Keyclone?

if your looking for free software try octopus, its in the stickies.
if you want to spend a couple of bucks of mum and dads credit card then grab keyclone.
Both have there respective stickies, install them on both machines and configure.