in fuchsia city
You can't. You'd have to transfer Mew to PalPark on SS to get it.
palpark
You cannot find Mew in HeartGold or SoulSilver. The only way to get Mew is to trade it from another game, or to use PalPark.
Yes, I Think You Can! You need to trade a ditto from a heartgold or soulsilver. Or, you can go to palpark and migrate a ditto from silver or gold!
You can find them in the underground, or you can attach one to your gba Pokemon and palpark it over.
There is no secret garden in palpark. yes you get arceus there
The only possible way is to trade it from Heartgold or Soulsilver(from Pokewalker), or have it put in the PalPark from Ruby, Sapphire, or Emerald.
any of the Pokemon you migrated
you cant find celebi in soulsilver
it is a place where you can transfer you pokemon from previous generations (i.e. from pokemon ruby/sapphire/emerald/firered/leafgreen to pokemon diamond/pearl/platinum/heartgold/soulsilver). there is a similar feature in black and white called poke transfer.
IN POKEMON DIAMOND TO ENTER INTO PALPARK,FIRST YOU NEED TO FINISH SINOH POKEDEX AND FLY TO SANDGEM TOWN THERE DOWN WILL BE WATER SURF ON IT AND GO STRAIGHT DOWNWARDS AND THEN YOU WILL FIND A PASSAGE TOWARDS RIGHT GO THERE AND YOU WILL BE IN PALPARK ISLAND AND THEN IT IS EASIY TO SEARCH FOR PALPARK AFTER THIS AND ONE MORE THING YOU CAN GO TO THE ISLAND BEFORE FINISHING THE POKEDEX BUT YOU WILL NOT BE ABLE TO ENTER IT.
you cant, you have to get it in GBA game and transfer it to palpark in diamond or pearl.