Munna is not required to use Dream World. But supposedly Dream World is not available yet, for any Non-Japanese game.
you need wi fi
Munna evolves by stone, not level. it evolves with moon stone
In order to teach Dream Eater to any Pokémon, you would first need the TM for Dream Eater. Once you have the TM in your inventory, you need a Pokémon that is the correct type to learn the move.
You need the C gear early in the game,then when you get the game sync, which may be undergoing miantenance, you choose any Pokemon. They will go to sleep and you have access to the dream world for one hour exact every day. Try to find great stuff there, when you get a Pokemon there go on the wireless on the C gear and go to the entralink. The Pokemon you find in the dream world will join you there. The Pokemon are from the past generation games.
Celebi is not available in Pokemon black or white. Just transfer from the 4th generation games using pokeshift or find it in the dream world.
You can find Munna in the dream yard but to evolve a munna into musharna you need a moon stone unless you find a wild musharna but i evolved my munna with a moon stone
Munna does not evolve by leveling up. You need to use a moon stone on it.
You need to buy it with berries from the dream catalogue in your dream house.
you need wi fi
You will need to trade it from Pokemon White. Or you can get it at Spooky Manor in the Dream World (Over 10,000 dream points).
The dream world is a place where your Pokemon go to sleep and dream and comes true.To get the dream world you have to first make a account at Pokemon.com.Then you go game sync in your game (Black or White)and then you get to the dream world you will need Internet in your house.
It is very difficult but first of all you need Pokemon white or black and go on a certain site just ask Google.ca for dream world site and also you need game sync on Pokemon White or Black.
you have to send a pokemon into the dream world using online function on your c-gear (make sure you're in a place that has wifi). you can actually play in the dream world by registering your pokemon black/white game in to the global link (you need to create a pokemon.com account first) and going to en.pokemon-gl.com and clicking on "pokemon dream world"
Munna evolves by stone, not level. it evolves with moon stone
No you need to trade it from past games or use the Dream World.
You need to have the C-Gear and have rescued the Munna at the Dreamyard. After that, go find Fennel in Striaton to hear about her research. You can make your Pokémon dream via the Wi-Fi menu, but keep in mind that the Japanese Dream World will be under maintenance starting on the 18th and the American Dream World won't be released in the first place until March 30, so you probably won't be able to use that feature right away.
You need 10,000 points in Dream World. When you reach it, Ralts will be available in Spooky Manor. Go for it! You can find and befriend it. Good Luck!