How do you enter cheats for need for speed most wanted cheats on psp?

when you can skip the whole of the black list and face razor as soon as you lose your car!!!!!! i know cool huh

ya i think that the biggest cheat is !mr. blonde. this for the psp version. oh yeah you have to put a space in between mr. and blonde this unlocks all the cars and gives you i think 500000 dollars.

!mr. blonde.

Enter one of the following codes at the main menu to activate the corresponding cheat function: iammostwanted - Unlocked cars givemethegto - Releases the GTO iammostwanted - Unlocks all cars...

I believe you can only get infinite money by the gameshark or action replay.