Thanks for the responses. I tried using tahaxan, a lot of the files found in the ROM are .pac files, besides .pac, the only other file types are: .ncg, .nsc, .ncl .
I found the image files(under utility.bin) for just "text images"(.ncg?).
I randomly clicked and viewed a bunch of them and it does seem to be text images but that's all I seem to find.
Text image that seems to be part of the menu but I can't figure out a lot of them.
Though I can not seem to find any in game images(such as an image of a character's face) in the ROM.
As for what image I am trying to find and why I am editing it.
I'm trying to edit a character image in yugioh stardust accelerator. In the storyline, there is a part where your character is forced to get a marking on his or her face.
While playing the card game, you see the face of your character all the time(it's just a simple image), so it got annoying for me to look at the mark on my character's face so I am trying to find and edit the image of the mark on my character's face, since I liked it a lot better without the mark.
Anyway using Tahaxan, I found image files under utility.bin/char folder(which I think char stands for character/text). And the folder seems to contain images of just text for the game menus and stuff.
But besides those, I can't seem to find anything else.
There are a lot of pac files, what are those and could images be in the pac files? I can't do anything with them besides extracting the file.