I downloaded DS Download Station 1. And it's nice, but i want to modify it. I started DSLazy and i opened the Download Station Rom. I unpacked it. I found the place of the demo's. They're named like AGFEDemo . I tried to replace this with a DS Rom. I copied a game which i renamed to AGFEDemo.nds . I compiled it, and when i try to load it, it hangs on 0,00% with loading that rom. I tried it again, and i renamed the game to just AGFEDemo . I still get the same problem. I think that these files are DS Roms too, but they're editted. I still didn't find the way to let my games work. Now i looked in the other folders. I found a file called sign.bat . I think this app modifies a game to let it work with DS Download Station. Does anybody tested this or is it impossible to edit the DS Download Station ? I also found the file which contains the name of the rom. I didn't found the icon of the game.