You can just manually type them in depending on the system you use, some gamesharks allow you to hook them to your computer and update them or in the case of a playstation 2 one, you can add the codes to a usb thumbdrive and update the codes onto the GameShark memory card for use.
Well sorry to tell you this... but you have to be an admin... or just look up some codes on google
No, you cannot. Because you have to put the codes into the GameShark itself and then put your game in.
on the gameshark
There isn't a gameshark for Pokemon pearl but you can get an action replay to put codes on.
In order to create your own Gameshark codes, intense familiarity with hexadecimal coding is required. Pre-generated codes can be entered with ease, however, and several places supply these codes.
Careful! This can destroy your game1
First get a gameshark then look online for codes after that put the gameshark in the leafgreen game then type in codes. Also the codes can get you Pokemon and items instead of looking and looking you can get them easily. Most gamesharks are $15 to $20. Hope this helps ;)
there is gameshark codes
In my opinion i think the best way to get Gameshark codes is to either put it in on Google saying the game you want to Gameshark for example "Pokemon Crystal Gameshark codes" if possible go on IGN FAQS but there is also another way by going on super cheats and searching the game you want to mod
go to gameshark.com-buy gameshark
No.
You need to buy an Action Replay or Gameshark. then enter the codes into there before playing the game