Need a Dex Drive of some sort or a product that uses the Dex Drive Format.
You need a Game Shark code list save to your memory card.
Insert the memory card that contains the Game Shark codes into memory card slot #1.
Highlight select cheat codes from the main menu press the X button.
In the select game menu, press the select button to display the options menu.
Highlight load codes from memory card then press the X button.
The save/load screen will appear. If the code are on the memory card in slot #1, a message will tell you that the code were found.
Highlight add code and press the X button. To cancel this procedure, highlight cancel and press the X button.
If you selected add codes, the code on your memory card will be added to your Game Shark.

HOW TO INSTALL A TEXT CODE LIST

Download a Game Shark Pro hacker utility
On the hacker utility go to the code list and click on the download codes button in the download codes from cartridge section.
Open the code list icon with Microsoft word, Notepad, or some sort of text simple text program.
Now open the code list that you downloaded it at www.sephiroth.htmlplanet.com or some other site.
Go to the spot on the code list where it says the codes your looking for and cut or copy the codes.
Then paste them on to your list under the area that is in alphabetical order.
Now go to the Game Shark hacker utility program and under code list click the code list compiler button.
If it checks out ok then click the upload codes button while the Game Shark is on and in the main menu.