HotkeyNet works fine with Warhammer if you've got only one copy of the game on each PC. That's why the sample script is written for two Warhammers on two PC's. But HotkeyNet can't send to Warhammer when the game is in the background. SendWinX was an experimental method for sort-of-sending-in-the-background, but most people who tried it say it's not good enough.