Powerful desktop computer systems are now affordable to local groups working to improve conditions in Americas distressed urban neighborhoods. This creates the opportunity for them to use geographic information (data that can be displayed on maps) quickly & easily to help them achieve their neighborhood improvement objectives. This report introduces the new opportunities that exist for using computer based geographic information in their work. advances in the accessibility of geographic data; using geographic data; neighborhood-level applications; citywide initiatives & policy change; & catalog of data sources. Illustrated.