If the GPS receiver outputs NMEA data, then it can be used with any popular GPS navigation program.
I don't know about the other two questions.
i was just googling trying to find some information about hacking/modding this reciever to use with other software such as microsot streets and trips. i cant find any bit of info on this so i was wondering if there is any sites dedicated to this specific reciever.
also, i know if you click on gps properties in the software you can see your coordnates. is there anyway to export these to websites such as google earth?
3rd. is there anyprogram that uses the .gps extention that is found in navigator9/gpstrack/*date*.gps to get useful inforamtion