Yo itman, I didn't recognise you because of your name change lol! Congrats Sneasel:D
Basically, that new program is for Keitai Denjuu Telefang, a game that plays like Pokémon, but was only released in Japan. Way back in 2000, some chinese bootleggers got a hold of the ROM and hacked it to translate it into English, and badly I might add! They then released their hack as 'Pokémon Diamond and Jade' and sold it on eBay, presumably using the Pokémon name as a means to get more people to buy it. Look it up on Wikipedia!
What Denjuu Editor SP does, is edit the monsters in the game, like PokéEdit DS does for the Pokémon in DPPt.
Hope that clears things up:P