What Mercenaries 2 Cheats Are There That Actually Work?

I know there are cheats out there, but what cheats on Mercenaries actually work?

Is There Any Cheats For Nascar 08 On Ps2 That Actually Work?

I want to know how to unlock all fantasy drivers but Race (as the first name) and ThePack (as the last) does not work.Also does anyone know of any more cheats that will work for this game?And I have it for Ps2.Thanks.