How do you get the passwords on juiced 2 for psp

Enter the password at the password prompt.

KNOX: Unlock Last Man Standing Challenge
YTHZ: Unlock Special Challenge #1
JRWS: Unlock Special Challenge #10
WIKF: Unlock Special Challenge #11
FAMQ: Unlock Special Challenge #12
GVDL: Unlock Special Challenge #2
RBSG: Unlock Special Challenge #3
BSLU: Unlock Special Challenge #4
MRHC: Unlock Special Challenge #5
MNCH: Unlock Special Challenge #6
KDTR: Unlock Special Challenge #7
DOPX: Unlock Special Challenge #8
PRGN: Unlock Special Challenge #9