GAMESHARK CHEATS

Infinite Gil: 8009d260ffff
Quick Level Gain: 8009d7d8ffff
99999999 AP After Every Fight: 8009d7dceoff and 8009d7de05f5
99999999 EXP After Every Fight: 8009d7d8eoff and 8009d7dao5f5
Super Limit Speed Up For Character In First Position: 8oof5e6aooff
Super Limit Speed Up For Character In Second Position: 8oof5e0coff
Super Limit Speed Up For Character In Third Position: 8oof5ed2ooff
Infinite Hit Points: 8009d85c135f
Infinite Magic Points: 8009d8600195
Cloud's Time Bar Almost Always Full: 8oof5bbcfffe
Character Select For Third Posistion: 8009cbdeffo* (*= Character #)
Barret-1
Tifa-2
Aeris-3
Red XIII-4
Yuffie-5
Cait Sith(Sometimes Young Cloud)-6
Vincent(Sometimes Sephiroth)-7
Cid-8
Final Attack Materia: 8009doc40020
Aeris Ressurection Game Shark Code: 8009cdbe ff03

NOTE: I do not know what the Aeris Resurrection Code does, but it might let you do what you need to do in the Japanese Version of the game to bring her back to life...

And more Codes to be added when I find them...