1.Press the plus button
2.Go to EXTRAS
3.Press enter cheat codes
you dont type in the codes you buy them in the mailroom at the colledge
In the menu it will say put in codes then you click that and you put in the cheat code.
you can get cheat codes from cheatcc.com
you type cheat codes in like this snow1
if you have a dsi x large and trying to get cheat codes on it and you have some than you put in the game you have cheat codes for and when it pop up go to opitions and put it in but if you donn't have cheat codes for it go to cheat cc .com
you first put your phone in the bathtub, then you put it in the dryer. FInally, you get the cheat codes for it.
put in the cheat dgsnrgconiz
You pause the game and select extras, there is a thing called "secret codes" on the top of the list.
you can get the dsi cheat codes at gamestop
there are codes
i dont know but u can find cheat codes at www.cheatcc.com
If you want to put in cheat codes for diamond and pearl, you need an action replay disc for you nintendo.