I agree with everyone else here, Keyclone is hands down the best investment to make if you don't want to make the hardware investment. I've been using it for a few weeks now and haven't had a single issue. My set up consists of three (beefy) systems. I use vetra to broadcast keystrokes to all three systems and keyclone to broadcast keystroke to two wow.exe windows on two of the systems. It works like a charm. No lag, no dropped key, no nothing. Now if Keyclone had Multibox or Synergy functionality (without the screen going nuts), I'd glady pay $20 per client!