APPLETON, Wis. (AP) — The new health care reform law makes health insurance available to the 500,000 Wisconsin residents who don't have it, but not all of them know about the new law or how it applies to them. Groups are working to teach the uninsured about their options. But it's not easy to determine who those people are or where to reach them. Michael Bare is with the Community Advocates Public Policy Institute in Milwaukee. He says his staff knows where the uninsured are concentrated, but it'll be challenging to get them committed to paying their monthly premiums on time. Jon Peacock is a research director for Wisconsin Council on Children and Families. He estimates that only half the uninsured population knows about the new law.