you have to walk 545 - 765 spaces
get my Pokemon ranch on the wii then store 999 Pokemon and Haley, who runs it, will ask to trade you a mew for an egg (you give her an egg and she gives you a mew).
Mew can't lay an egg.
No, it is impossible to breed Mewtwo and Mew with any Pokemon or for any Pokemon. Their Egg Group is No Egg, which prevents them to breed.
No.
yes
Mew is unobtainable in Pokemon Black or White. To get it, you must either trade or wait for an event giving away Mew (or hack or cheat!)
No.
In any game of Pokemon, not just Diamond and Pearl, you either cheat to get him, which i wouldn't recommend, or wait for an event for mew. Mew is my favorite Pokemon!
She wants an egg after you have 999 Pokèmon on it.
go around hearthome city and ask mr.goods and he will tell you he will give you something wait 2 days and go back to mr.goods and he will give you a rare egg(depending on the game) wait for it to hatch and you will get a rare legendary Pokemon either MEW,LATIOS,MESAPORT,UXI,AZALF, and maybe another Pokemon.
It takes about 80,000 steps for the bad mew egg to hatch.
Since Mew is a legendary pokemon, it does not have a gender, so you cannot hatch an egg. If you want a Mew, you have to use an action replay code or trade it from another game.