I'd recommend Guillermo Del Toro's The Devils Backbone. If you liked his Pan's Labyrinth, then you'll probably enjoy it. It's not really scary, but what horror movie is? It's the rare well made horror movie.
It's subtitled so if you haven't finished your hooked on phonics, or believe that foreign movies should be English Only, you'll have to wait a few months for the Hollywood remake starring Shia Labeouf.