Gameskanker.com
The game skanker.......1000's of cheats and hints for 60+ systems, playstation, playstaion 2, pc, nintendo 64 and dreamcast, game boy color, covering both pal and ntsc versions..... updated constantly. serving the usa, europe and the world.
http://www.gameskanker.com/psportable/a2z_playstation_port.htm
Cheatvillage.nl
Cheats en tips voor de playstation portable.
http://www.cheatvillage.nl/forumdisplay.php?f=475
Gamevillage.nl
Overzicht van nederlandstalige cheats voor psp games
http://www.gamevillage.nl/gv.cheats.pspgames.html
MennekeCheats.nl
Cheats, codes, hints, walkthroughs, and faqs for the psp,sony,playstation,portable,sony psp video game system.
http://www.mennekecheats.nl/psp/cheats.html
Spelcodes
Spelcodes
http://www.spelcodes.nl/
Psxextreme
Cheats for psp games
http://www.psxextreme.com/scripts/cheats3/cheats.asp
SuperCheats.com
The best site for psp cheats. all free and updated daily. has forums and question and answer facility
http://www.supercheats.com/psp.htm