Cloning: Insert the Pokemon you want to clone into Bills PC. Then switch the box. While your switching boxes shut off the game when it says SAVING DO NOT TURN OFF POWER. THen turn your game back on and the pokemon will be in your lineup and the other will be in your pc.

Missingno: Yes there is a Missingno is Gold/Silver. But the code requires a gameshark. Type in 01fcedd0 or 01fdedd0 or 01feedd0 or 01ffedd0. Warning: catching the Gold/Silver Missingno will screw up your game.