Three ways.
To get the first two, go to the Mystery Gift setting on the menu and select From Wireless for 1. and From a Friend for 2.
Yes you can if you have Mew in your Pokemon SoulSilver/HeartGold You can put Mew in the Pokewalker.
An exclusive Mew is coming out for mystery gift for the games Pokemon Heartgold/Soulsilver in Japan only.
No you'll have to transfer it from LeafGreen/FireRed or trade it from SoulSilver/HeartGold.
Mew was only available with a wifi event from October 15th, 2010 to October 30th, 2010.
you can't but if you have a wii there is a wii app Pokemon ranch that is avalible for about 1,500 points (15$) if you get max ranch on that app mew should appear
To get a Mew in Pokemon Heartgold, you could do it through a Nintendo Wi-Fi event.
unfortunately, you cannot get mew in heartgold or platinum unless there is an upcoming wifi event for it
Go to the GTS (Jubilife City) and search Mew and trade for an offer you think reasonable OR Offer a Pokemon for a mew with the criteria that you would like, just remember, stay reasonable.
Yes you can if you have Mew in your Pokemon SoulSilver/HeartGold You can put Mew in the Pokewalker.
you cant anymore srry :(
yes
An event
yes
Mew
mew
Mew can't be catched in Pokemon heartgold, only mewtwo.
you cant for heartgold or soulsilver suckers