com0com is a open source program that can redirect
TCP/IP data to a serial port for programs like Google
Earth that accept serial port data. It is not quite as
straight forward as GpsGate, but follow below to get it up
and working. It makes things easier
if you get a signed version. One of those can be obtained
here:
http://sourceforge.net/projects/com0com/files/com0com/2.2.2.0/.
Grab the file that indicates signed. You also need the
helper program, com2tcp, grab the 386 zip file with executable here:
http://sourceforge.net/projects/com0com/files/com2tcp/1.3.0.0/.
Follow the steps below for setup: