you would need an action replay, available at most game stops. then you would read the manual. ;)
Hope this helps. ☺
Chat with our AI personalities
yes there are cheat codes if you go on to www.i-cheat.com it will tell you cheat codes for all the games avialable for DS, including Pokemon pearl.
action replay
the only cheat i use for ds is action replay....this is how u use it........u select the cheats u want and then start the game each cheat u use has a code so in order to have all those on your game you have to push the occured codes example:(this is a real cheat for Pokemon ds)hold down start at the title screen for full"POKEDEX" GET IT:)
Just Use Cheat Codes
There are r4 cheat codes, download it from gbatemp.net then download the r4cce (a program that edits cheat files) use GOOGLE. Then follow ins. from youtube. Or follow my way. Put the usrcheat file (the 1 u downloaded) in the system folder in r4. then open it using r4cce. Find and copy Pokemon: Platinum (U). Open the CHEAT file in the ds and paste the codes there. And you now have codes for Platinum. Use this for other games that dont have cheat.