Sorry, but you cannot capture or find a Mew in any games. The only way to is to get it by event, or use Action Replay. But to cheer you up, you can catch MewTwo in Heartgold/SoulSilver.
you can't
To get a Mew in Pokemon Heartgold, you could do it through a Nintendo Wi-Fi event.
Yes you can if you have Mew in your Pokemon SoulSilver/HeartGold You can put Mew in the Pokewalker.
yes
An event
yes
Mew
mew
Mew can't be catched in Pokemon heartgold, only mewtwo.
you cant for heartgold or soulsilver suckers
you can't
Nintendo event