Do you have a google map to convert in google earth? Do you have gps data to be shown in a personal computer? This website will allow you to convert every map in the format you need!
It is free and it doesn’t require any registration.
GPS Visualizer can read data files from many different sources, including but not limited to: GPX (a standard format used with many devices and programs, including Garmin’s eTrex, GPSMAP, Oregon, Dakota, Colorado, & Nüvi series), Google Earth (.kml/.kmz), Google Maps routes (URLs), FAI/IGC glider logs, Fugawi (.trk/.wpt), Furuno, Garmin Fitness (.fit), Garmin Forerunner (.xml/.hst/.tcx), Garmin MapSource/BaseCamp/HomePort (.gdb), Geocaching.com (.loc), Google Spreadsheets, iGO (.trk), Lowrance (.usr), Microsoft Excel spreadsheets (.xls/.xlsx), NMEA 0183 data, OziExplorer (.plt/.wpt), Suunto X9/X9i (.sdf), Timex Trainer, TomTom (.pgl), U-blox (.ubx), XML feeds, and of course tab-delimited or comma-separated text.
Disclaimer: this is link, that I found very useful and I want to suggest. Feel free to suggest me other samples!
It is a fast guide, a tutorial, an how-to article if you need to solve your problem, if you need a tip or if you are in trouble and you need an help!