I don't think there's any other way than transferring the Pokemon back on to the game and then putting it on again with a different route selected
you can find munchlax, spiritomb and feebas in quiet cave.(to unlock quiet cave, you need 100,000 watts)
You unscrew the original back of the pokewalker OFF of the pokewalker, then replace it with the back with the clip.
Route 224 is found if you exit Victory Road after obtaining the National Pokédex through a new exit. The first time you go there, yo will be accompanied by a trainer named Marley.
magmar is found in the burned tower in ectureac but mostly at night hope this helps
you need the national dex
By unlocking the pokewalker route
There are a couple ways to get pikachu on Heartgold Soulsilver. one is with the wi-fi event for the pokewalker route "yellow forest". two, "Resort pokewalker route. three, "Rally" pokewalker route, and the "sightseeing" route.
You can't get Squirtle in the PokeWalker; it's a Kanto starter Pokemon.
pokewalker route
You have to get a lot of watts on the first route and when you're taking your Pokemon out of the Pokewalker, it should say on the top screen how many watts till next route. When you get watts on the Pokewalker, don't use them all.
No you can't.
go to the suburban route on the pokewalker.
It will be given out as an event at a date to be announced.
a pokewalker route.
you find it in the last route 'Quiet cave' it takes 100,000watts to unlock
viridian forest or the pokewalker resort route
Well you can't catch it in Pokemon Heartgold though if you have the Pokewalker you can catch it in Quiet Cave a Pokewalker Route