@guiltyspark, Ice Arceus, patrick, etc:
I've looked into the copyright issues before, when I was planning my game. As long as all credit is given and there is no profit whatsoever, you are allowed to make fake Pokemon games. However, if someone (not necassarily someone making the game, it could be anyone) plays the game and converts it to a DS file, then tries to sell it, Nintendo and it's associates reserve the right to shut down the project and the game.
Also, I'd try not to use any brand names in the game.