Instructions
Launch the HyperLobby application by opening the Start menu and clicking on its shortcut.
Connect to HyperLobby by typing your username in the "Call sign" field and your password in the "Password" field. Click the "Connect" button.
Click on the "Lock On: Modern Air Combat" chat room. A new window will pop up asking you to select your game's executable file.
Click on the "Search" button and select the "Lockon.exe" file that is inside the folder into which you installed the game. Click on "Open" and select "Save."
Double-click on "Lock On: Modern Air Combat" in the list of available chat rooms to enter the game's chat room. You can now chat with other players and start a multiplayer game by double-clicking on the name of the player you wish to play with.