download cheat code editor and cheat code manager. om ccm copy and paste the game cheats u want onto my codelist. now go onto cce and go on file then import xml file. click that then go on to the place where you save ccm and go onto local codelist then go onto the 1 u want and click ok. then save it as cheat.dat or usrcheat.dat. Be sure not to put both folders at the same time.before u save it connect ur r4 sd card on ur usb. click save and save it under _system_ folder as usrcheat.dat or cheat.dat
connect sd card into r4 and put into ds
Happy Cheating