Well, if you have a Gameshark or are running the PSX Emulation Cheater in the case of ePSXe, you can always just use this code:
D01D496C 10F0
801D498A 1042
It's the FF7 checksum bypass. Basically, it it just ignores the Checksum result all together and loads the file anyways. ^_^;; This is also useful for people with old gamesharks (2.1 or 2.2) that the switches don't work on. <_<