there is no cheat, i know even though i have heartgold once you delete a file you cant get ano ther back.
It will appear in Mt. Silver cave.
this is common sense, but metapod
It will appear at Seafoam Islands.
if you are talking about a previous evolution, there is none... if you are talking about the previous Pokemon in the johto pokedex... its venemoth with venonat before that... in the national pokedex, it is mr. mime
wild pokemon? my guess is that it's random
Celebi does not appear in the gold or silver games, however he does appear in Pokemon crystal.
groudon appears in soul silver.
go to the Pokemon gym
All your previous things will be gone forever
No... But Nintendo are making remakes of Pokemon Gold and Silver
no. the battle at victory road is the last encounter with him.
anytime.