Since there are no codes for Heart Gold yet, I know a little secret...... You know when you put a Pokemon on the Pokewalker, if saves afterward. Well, while its saving turn off the power. Now you have two of that pokemon. One in your PC box and one on the pokewalker. :-)
Chat with our AI personalities
You might consider trying to firmly attach the Pokéwalker to a fan and then turning both devices on.
The only way to get a Snorunt is to transfer it from your Pokewalker. You get Snorunt on Icy Mountain Road on the Pokewalker. You can also trade a Snorunt from the GTS.
NO The Pokewalker was made especially and only for SoulSilver and HeartGold, so the only way you could walk a Pokemon from your Platinum game is if you traded that Pokemon to SoulSilver\HeartGold and then transfer it onto the Pokewalker
By unlocking the pokewalker route
yes