you need a gameshark code
No
It is entered by having the gameshark & the emerald inserted into the gameshark, then turn on the Gameboy Advance & the Gameshark should have the cheats for that game on the menu, if not they can be entered manually, for the cheats go to their website (they will have them).
Yeah.
its called gameshark
Yes
yes; but one at a time
Yes, GameShark codes work in Pokemon Emerald for the PC. My codes work when I try them.
You cannot get a gameshark in Pokemon emerald its a thing you buy and plug into your GBA (GameBoy Advance) you type a code into and there you go.
no
you can use gameshark code
yes there is