Heres the Translated readme, im sure this ones better.
Instructions
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1. Rip your favorite game using cdrwin(as a raw 2352 byte sector image), put
both image and cue in the same directory as girigiri saturn.
OR
1. Run glaunch.exe with a full pathname(e.g. If you have all the files in
c:\girigiri, then run the program as c:\girigiri\glaunch). Setup everything
how you want it, click the big image, then when Girigiri starts, close the
program(you only have to launch glaunch once). You may also want to adjust
the AREA option in base.ini to the region of the cd that's in your
cdrom(see step 3).
Now just run gsaturn with the "-DISK" switch(e.g. gsaturn -DISK). Make sure
your saturn game is in your first cdrom(if you have cdrwin handy, just
check to see which one is first in the list).
This mode does work(I got it working in Win98 using VirtualPC and on my
Win2k setup), but it may not(I wasn't able to get it running properly in
my WinXP setup). Just make sure your aspi drivers are up to date, etc. Skip
instructions 2-7
2. run gentoc on the cue file(e.g. gentoc bloop.cue), this should generate
a file called toc.bin.
3. Now edit base.ini, and change DISK1TOC so it points to the toc.bin file
you just created(you shouldn't need to change this as by default, it's
toc.bin). And change DISK1IMG so it points to game's image(e.g. bloop.bin).
Lastly adjust AREA to the region of the game:
1 = Japan
2 = Taiwan/Philipines
4 = US/C
5 = Brazil
12 = Europe
etc.
4. Now run glaunch.exe with the full pathname. (e.g. If you have all the files
in c:\girigiri, then run the program as c:\girigiri\glaunch)
5. In the Launcher, adjust the settings how you want them(it should all be
pretty straight-forward), then click on the huge image
("Click here when you are finished").
6. Girigiri Saturn should basically start up, and go through all that bios
spiel like it does on a real saturn.
7. You only have to run glaunch once. So next time(unless you want to change
some settings), just run gsaturn with the "-i" switch(e.g. gsaturn -i)
8. If the game doesn't load, it could be an emulator issue, or perhaps a
bug in gentoc. You could always try adding your game in games.dat and
tweaking the settings.
9. Emulator settings, save ram and backup ram files are all located in settings.