Cheat codes for PS2 games?

[yellowpinkyellow15]

ddr?
rock band 1?
guitar hero III?
anyone know any cheat codes for those games? please lemme know!

 

[nikunjv]

rock band 1:
http://www.cheatmasters.com/cheats/25356/Rock_Band_cheats.html
guitar hero III:
http://cheats.ign.com/ob2/068/899/899095.html