SO, let's start. After you've done your preparations with the software
needed put your game disc in.
Note: This walkthrough is based on the PAL version of the game disc.
Do not ask me what to do if something is wrong/different in the
Japaneze or American (no I don't mean the country but the continent)
versions because I DON'T KNOW!
Here we'll do some recon, know what files exist and what we'll work with.
When you go to your drive to see the content of the game the first folder you get is the game's main folder. Here there are a couple of things and our most used location, basically, everything you want is here. Let's see the files now.
Files
Music files in here.
Umm I don't really know because all I've found in here were
.opd and
.bin files and I can't open any of these two. I can't open
.opd because the only programs I found on the net to open them were
Durango and
Omnipage, both of which wanted weren't available for download as an anonymous user...you're certainly welcome to try though...
More sound files...MUCH MORE.
Contains some
.bin and
.txs files which can't be opened.
ELF files are...well think of them as PS2
.exes. This probably contains images or something for the
GUI (
Graphical User Interface). The
EU part of the name may be changed to NTSC in NTSC versions, this is just a guess though...
Contains
.ovl (overlay) files, don't mess with this
PSS files are ps2 videos, use
PSSPlex to decode them.
Same as above, this one seems to be in PAL (Europe) mode.
Nothing you should pay any attention too (I bet you're going to open it just 'cause I said that, heh

)
Keepin' 'em comin'!
More and more illegible files.
I'm sure you remember seeing something like this. You're right. This number is written on your disc and the game case (on the sides). Basically this number has something to do with NTSC and PAL versions so having a different number is logical if your disc isn't the PAL version.
- SYSTEM(.CNF but the extension's not viewable)
Treat this like it doesn't exist.
That's it with this folder, now go to subfolder NTCNFBIN
NTCNFBINFiles
.irx files can't be opened. They're modified
.elf files. I don't know anything else because I never have or will create a PS2 game

.
This could be an image but neither Irfanview nor Quicktime Picture Viewer could open it. The name implies that it could be the backgrounds (GUI, fans etc...)
Look above, PAL edition.
I'm proud to announce that I have no idea what this is.
99% the save file icon.
Same as
EUROPEAN.PF, although this one's in Jap.
.bins can't be opened.
Same as above.
Probably your "avatar" in online play? I can't know since I don't have net play.
The opposite of
JIS2UCS.BIN.
I think JIS is what people call
Romanised Japanese (or something). That is when you write Japanese words using the Roman Alphabet, which pretty much means English since lots of languages, English included, use the Roman alphabet. Don't know if it has anything to do with it though...and quite sadly there's no way to know...

Now I realise there is the IOP folder too but that folder is useless to us since all it has are
.irx files and an
.img file. This folder contains modules for the game and such folders are found in every game, don't get click-happy.