Is this correct?

[Reda]

Vi una pelicula en espanol?
or
Vi una pelicula de espanol?

[Rusty]

(Proper accentuation is missing in both sentences, so neither is technically correct, based on spelling alone. There's an "Accents" drop-down menu, above where you type, that can be used to insert all the special characters you'll need when typing in Spanish.)

If the film is in the Spanish language, use the sentence that contains 'en'.