I'm not sure why everyone is so concerned when their child won't drink milk! We are the only mammals to drink the milk of another mammal, which when you think about it is pretty gross. That being said, I love my cow's milk and was a little concerned when my son wouldn't drink it. We tried everything: soy, lactaid, almond, goat, etc, and he wouldn't drink ANY kind of milk except breast milk straight from the tap!
I talked to his pediatrician about it, and she asked me point-blank: "Why does he need milk?" It really opened my eyes to the fact that we can get things in other ways. Broccoli, for instance, is a GREAT source of Vitamin C and calcium, and other dairy products are good for other things milk provides.
Around 18 months, he wanted to eat cereal like Mommy, so he started drinking milk with his cereal through a straw (when the cereal was gone). He still isn't a big milk drinker, and he's almost 4.