In the past I have been able to download waypoints into my Garmin72 using GSAK and a serial wire. My old computer was Win98. I have it hooked up now to a WinXP machine and it won't communicate through the COM1 port. I have checked all the settings to make sure they read COM1. I have been successful using the same port on the same computer to download waypoints to my Palm. What else can I do to determine what the problem might be? Thanks for any help anybody can offer!