To activate the code type WWW.VOLITION-INC.COM, then hold the tilde '~' key and type the following:

     C - Send message to enemies. 
     Shift C - Toggle availability of countermeasures for all ships. 
     G - Mark all primary goals complete. 
     Shift G - Mark all secondary goals complete. 
     Alt G - Mark all bonus goals complete. 
     I - Invulnerability. 
     Shift I - Toggle invulnerability for target. 
     K - Kill target. 
     Shift K - Destroy targeted subsystem. 
     Alt K - 10% damage to yourself. 
     O - Toggle Descent-style physics. 
     R - Issue a rearm request for target. 
     Shift W - Infinite Weapons for ALL ships, including yours. 
     W - Infinite weapons for just YOUR ship. 
     9 - Scroll forward through all secondary weapons. 
     Shift 9 - Scroll backward through all secondary weapons. 
     0 - Scroll forward through all primary weapons. 
     Shift 0 - Scroll backward through all secondary weapons. 

Note: You CANNOT advance the mission if you activated the cheat codes.