First, you should let the Windows updates run to get SP3 NOW! Even if this has nothing to do with your problem, an operating system has to be up to date.
I just tried the send to gps feature, it worked. Running XP Sp3 and FF 3.6.3 together with a Garmin 60 CSx.
So this might as well be a Delorme problem.
GermanSailor
WHere do I find the sp3??