1. A method of georeferencing a raster map, comprising: providing for display a first map and a second map, the first map being a digital raster map, and the second map being a previously georeferenced map; the fist map being substantially similar to the second map when displayed; receiving an entry identifying a first point pair point on the first map; receiving an entry identifying a second point pair point on the second map, the second point pair point having approximately the same location on the second map as the first point pair point has on the first map; assigning a point pair point on the first map a longitude coordinate and a latitude coordinate, the longitude coordinate and the latitude coordinate of the first point pair point being identical to a longitude point and a latitude point associated with a point pair point on the second map.