After getting the National Pokédex, go to Bebe's (the PC lady) house. She'll offer you an Eevee, level 5. I suggest you save before you talk to her and keep trying until you get a female. (Ratio of male Eevees to female Eevees is 7:1, so if you plan on breeding, it's a little annoying.)
After that, occasionally the owner of the Pokémon Mansion (south of Hearthome) Backlot, will mention that he has Eevees in his garden. The encounter rate is pretty low (I tromped around for about 30 min. before running into one). I suggest you catch a male and breed it with your female, and before you know it you'll be running around with more Eevee eggs you can handle.
Hope this helps~
you have to trade from pearl
it tells you how
solacoen ruins
in a Nintendo event
you have to get it at an event or get an action replay
BY HAPPYNESS IN DAY IF IT is umbroen is in night
above jubilife city in the grass by using Pokemon Radar
im pretty sure it evolves certain types of Pokemon, you will have to find the Pokemon
In Pokemon Gold/Silver you need to found Bill in his house.
there is no eevee :(
Battle and defeat Cyrus in veilstone building
i think from starters is empoleon but from the others i think is gallede