A. GARMIN offers a software and cable kit to connect your GPS to your PC. The software is a DOS-based program that allows you to upload, download, and modify your route waypoint and tracklog information. This will provide you with a graphic presentation of this information but does not contain any maps. You can also interface GARMIN GPS units with other companies' mapping software such as Delorme's Map-n-Go and StreetAtlas. In this case, the only thing needed from GARMIN is an interface cable. The standard interface for GARMIN units is NMEA 0183.