Cheats for robot wars - arenas of destruction?

Effect: Open up all locked arenas, robots and secret componants, gives you LOADS of credits too - more than enough to buy all the robots you need or build your own top bot! (should work on pc/ps2) When: At the start of the game, "Create New Player" How: When you reach the "Create new player" part , use the name " JPEARCE". You should hear a sound if it works.

Use any arena in free play mode 
Highlight a locked arena that is directly next to a locked arena in free play mode. Press D-pad + X when moving towards the locked arena. If timed correctly, the previously locked arena will be playable. 
Extra credits 
Purchase cheap armor and weapons from the junkyard and add them to your spares. Save the game and return to the main menu. Then, return to the robot setup screen. Sell the armor and weapons to get full price for them.