Pokemon Diamond/Pearl Rom Hacking

[Ryu_Kaizer]

Hey, a friend and I are trying to hack a Pokemon Diamond/Pearl Rom so that we can replace the trainer sprites with our own sprites but we are having problem finding the program tool needed to replaces the sprites with.

I was wondering if anyone out there might know what program we'll need for and f so do you have a link to where it can be downloaded from

I figured this would be the best place to find information on something like this