Instructions
Plug two controllers into the PlayStation 2. Insert the game disc and turn on the system.
Start a new or saved game. Pause the game.
Press the "X" button on the second player controller. The two-player mode should now load.
Choose a screen configuration. Normally the screen is split horizontally. If you would rather split it vertically, pause the game. Press the R1 button and select "Display". Scroll down to "wide screen" and select it. The screen should be vertically split.