yeah, someone else who is on the south beach who is lactose!! i am doing it, and want a friend!!
anyways, i use a lot of soy based products- the cheese is really good.. and i love tofu as well.. other than that, i have been popping a whole lot of lactaid but even that is not enough- there are ways to go around it though if you cant have your dairy.. good luck! lets keep in touch and let each other know of any good recipes -milk free of course!