You need some tools to make a card in the game.

• Yu-gi-oh file extractor (found on the web somewhere)
• Hex editor
• Notepad
• and of course something to make the graphic of your new card.

It's really simple, just use the file extractor to open up the data.dat file, and export it to a temp location for editing.

Once done, you can use note pad and hex editor to modify the bin files in the Bin# directory.

You'll then need to dump your graphic image of your card, in another temp folder called temp-card folder, and you'll also need a mini version of your card, which goes in another temp folder called temp-mini folder.

Once you done all that you just need to use the file extractor to import the the bin files back into the data.dat, and import both your graphic image and mini image from the temp folders back into the main card and mini folder inside the data.dat file.

then its just a matter of running the game to see if your card works fine.