I've never done any hacking of anything. How hard would it be to make a simple hack of Black and White? I don't want to change the story or sprites or evolutions or anything. I just want to make a hack that makes these games more like the previous ones—where there's a mix of old and new Pokémon in Unova instead of just all new ones. I don't want it to be possible to catch every Pokémon in the game, like it seems most other hacks focus on, but just to be able to get previous and new ones. I'd want to just edit the trainers' Pokémon and the wild Pokémon for every location. How hard would it be to do this, and what would I use? Thanks.