Yes. You can use action replay to get cheat codes.
search platinum action replay codes then import the code to the action replay
You need an action replay ds then you have to find the codes if they aren't already preloaded onto it
you press action replay codes on Pokemon soul silver
No you can't use Pokemon colluseum action replay codes on Pokemon xd
go to www.youtube .com and search Pokemon pearl action replay codes
you have to purchase an action replay. then, you can type in Google.com and research Pokemon platinum action replay codes.
action replay
No
Go to neoseekers.com
Hi! You can get them on youtube.com or go on Google.com and type in What are some action replay codes for Pokemon diamond? Or type in action replay codes for Pokemon diamond and one more Pokemon diamond action replay codes. And there are some websites like neoseeker.com will probley pop up and they will have ALOT of codes! Hope this helped ;-)
Update your Action Replay firmware, then try using the codes.