Yup that is a Phalaenopsis You will want to repot it with fresh LFS. It is normlay pretty broken down when you get them from the store. Do not let it dry out, but do not keep it waterlogged either. Never set it in water. Dave is right about the getting too cold, but in ordeer to get it to reflower next year it needs to have a temp drop to about 55 for a few days for it to set a spike. After those flowers fall off cut the spike back to about one inch above the first unspent node (the place where the flowers come out) and it might branch and rebloom for you this year. Dave has the light right too. Really easy orchid to grow and the flowers last a long time.