This cheat unlocks all the available VT's and missions, but is tricky to pull off. On the title screen, set your tuner dial at position 0 (the 9 o'clock position). Before the music ends, move the dial to postions: 0,1,9,7,9,0,9,0,6 keeping the dial in each position for one second. Correct code entry will be confirmed with a sound.