No$gba can use both Action Replay and Codebreaker codes just fine through it's cheat menu for most games (Pokemon games do notoriously NOT play nice with cheats and Pokesav should be used on them instead).
Advising him to go to GBATemp and use cheats in conjuction with No$Zoomer is hardly the best option thus I merely provided another more reasonable answer which others may benefit from even if he was already satisfied by your answer.
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