To clone a Pokemon in Silver and Gold, go to a Pokemon Center. Find a computer in the Pokemon Center, approach it and deposit or retrieve the Pokemon you want cloned. There has to be at least 2 empty boxes in the computer storage system. Switch to an empty box and when you have the Pokemon to be cloned in your party, go to the computer storage system and choose to switch to an empty box. Choose yes when asked if you want to save and DO NOT turn off the Game Boy. Put the Pokemon that you want cloned into the empty box and then choose to change to another empty box. Choose to save and a ‘saving’ message will appear. When the saving is complete, turn off the Game Boy, then turn it back on to see if it worked. If not, release the Pokemon and go through the steps again until it does.