First what was the first pokemon movie ever made called and were would I be able to see it2. what episode has dark ash in it
As Trachy said, "Pokemon the first movie: Mewtwo Strikes Back" is the first official pokemon movie made. As for the episode with Dark Ash, I'm guessing you're referring to "battling the Enemy Within," which features Ash being possessed by an evil spirit, and the Pyramid King, Brandon, battles him.
If you want to watch either one, I have links to both. You won't have to worry about computer problems, I've never had any trouble with this site.