there is none.
haven't you already figured that out?
Chat with our AI personalities
go to start and then go to opitions and then secrect codes
its a cheat code enter jwa or "90=*6@
You will need action replay and get extra codes by copying them off of youtube videos.
yes there are cheats for need for speed undercover like money and car cheats but the cheats are only for ps3, xbox 360 and pc. there are no cheats for the ps2 and wii versions
If you are using the emulator. There should be button at the top that allows you to enter the cheat code. By the way you know that you need a master code. That can be found in a cheat website.