Can anybody please describe about how to use google earth toolbox to plot a coordinate on google earth after creating a kml(Keyhole Markup Language) file?

Can anybody please describe about how to use google earth toolbox to plot a coordinate on google earth after creating a kml(Keyhole Markup Language) file?

Hi, I read the NMEA format coordinates from GPS receiver and made a KML (Keyhole Markup Language) file using the kmlwrite function in mapping toolbox. After that what should I do to plot the kml file format coordinates on google earth. I downloaded the google earth toolbox from MATLAB file Exchange.But I have no idea about which function has to be used for plotting on google earth. Or tell me where can I get the help. Please help me. A sincere thanks to you in advance.