If I put the zapdos code where it appears or where I find it?

It will depend on what emulator you are using. If you are using Visual Boy Advance (VBA) or the GBA4ios, then there is a cheats option from the menu. Select that, and then copy and paste the Pokemon Fire Red cheats that you want to us in the appropriate section. It's best that you leave the codes deactivated until you want to use them, and when you do use them just use them one at a time. If you use too many cheats at once, it's likely your game will stop working and you may have to start over, or at least from your last save location before you activated cheats.