Follow these instructions to set up your own React MW2 server. Download a copy of Modern Warfare 2. The Steam version works best and will result in less errors. If you use the Steam version, copy and past the files to a new folder. Make sure you have The Visual C++ Redistributable Package installed [x86 (32bit) version]. Download the server updater HERE. Extract the contents of the zip folder into your game folder. You will be asked to merge the "main" folder. Allow it. Port forward one port of these: 28961, 28962, 28963, 28964, ...28969 If you don't know how to Port forward learn How To Port Forward Your Router. In your "main" folder, you will find a "server.cfg" file. Edit it with a text editor to set your server's name, game mode, map rotation, etc. When you are finished configuring the sever, launch the server with the "Dedicated_server.bat" file in the root directory. Your server should launch. Give it a moment to fully load and you should see it in the in-game server browser. A server.cfg and server_start.bat file are attached in case you don't have them automatically.