youpoop
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.
Rotom can change forms in platinum
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no, Rotom never evolves. Rotom has different forms which are not in diamond pearl.
You cant
You unlock a place where Rotom can change its forms.
not possible. you cna only do this in platinum
You don't spazz that's platinum
Rotom can't evolve, but it can change forms. Is this what you mean?
The only way to change forms is to have the Secret Key. Sorry!
You can't. Not that I know of, anyways. You can only change his form in Platinum with rotom's key or something.
You can't the only way you can is trade it on a previous version of Pokemon (example: Platinum , diamond etc) Then when you have rotom you can go in the lift in silph co in saftron city and change its forms :D