I was just messing about wondering why when you save an exe file you've opened in notepad, it won't work anymore. Turns out I wasn't thinking... it's just that it turns hex 00 into hex 20 (ansi space). That's the only reason.
Anyway, as FF7.exe was open in notepad, I had a little look down the code and came across some fun text:
great special thanx to you, ARIKO from your husband, HIDEJI
I wonder what else lies in here? I'm gonna strip out 7f-FF (and others) and see what I find.