by stonses fire dawn shinny etc
glaceon /vaporeon/jolteon/umbreon/flareon/leafeonand espeon
I'm not sure if you can catch Eevee in Pokemon pearl but you get it as a gift from Bebe in Hearthrome City after you get the national dex.
You need to trade with pearl and diamond for leafeon and glaceon. The 5 other forms are all attainable within soulsilver.
In Pokemon Diamond and Pearl you can receive Eevee from Bebe in Hearthome city.
EEVEE GROWLITHE and VULPIX
If your talking about EEVEE , No you cant ,You can only get it in Pokemon Leaf Green and Fire Red ,Then you can Migrate it into Pokemon Pearl ( Or Diamond )
You do not go anywhere in "Pearl" to change Rotom's forms because you can't change its forms in "Diamond" or "Pearl." Rotom is only capable of changing forms in Platinum, HeartGold, SoulSilver, Black or White.
Backlot's trophy garden, south of hearthome
max out your eevee's friendship during the day
you can't
no you can't
eevee and pikachu