I'm still getting the same error T_T
I extract ggxxac to a folder named "Roms", 2 ggxxac files show up in there, I open "nullDC_Win32_Release-NoTrace", go to File > Normal Boot, select ggxxac.lst, and the Naomi logo comes up, then the screen darkens and gives that error.
What do you mean by the first one, "Incorrect 'GG File' status"?
EDIT:
Nevermind, got it working! Friend suggested I "run as administrator" and it worked for whatever reason. Now to get online set up.