Dolphin
Nixxou's Light Gun Dolphin Release Page
6Bolt's MameOutputSender Latest Release Page
Enable Network Output on Nixxou's Light Gun Dolphin Emulator
Go to the release page above, and download Nixxou's Dolphin emulator. Extract the files into the install directory that you want. Go to the Dolphin install directory and rename or delete the 'MameOutputSender.exe' program. Then download 6Bolt's new MameOutputSender program and extract it into the install directory. Then open the Dolphin emulator, by double clicking the 'Dolphin.exe'. In Dolphin, go to the 'Settings', by mouse clicking the 'Config' icon. It will bring up a new 'Settings' window, on the 'General' tab. Then check the 5th check box, in the 'Basic Settings', labeled 'Enable MameHooker Outputs'. There should be a check in the check box. That is it, and the Dolphin Emulator is ready for Hook of the Reaper.
Windows Security Alert for Network Connection
After enabling the network output and starting Dolphin the first time after that, a Windows security alert might happen. For Dolphin to work with Hook of the Reaper, both will need access to the network. If you blocked one or both programs in the past, you must then unblock them in the firewall. A search on the internet will show ways to unblock the programs.