Plot your job locations in Google Earth! Include the latitude/longitude of each job, then export them to Google Earth or Google Maps to create a location map.
Each job appears as a push-pin.... click on the push-pin to see additional information about the job. Use different push-pin colors to color code your locations.
You can export all of the jobs, or just the current lookup. The exported locations are saved in a "KML" file, which you can email to other employees or clients if desired.