For the bulbasaur, you input 1 (the number of the pokemon) in the calculator and you press L. After you clear the calculator and you input 5 (the level you want) and press R. You go in the grass and the pokemon appears.
@Xdqwerty, Its all about tech and it has an interesting story. Lain becomes obsessed with a virtual world called "The Wired" and that she tries to explore her true identity.