It works with my Garmin 35 PC, I have the serial version thought. I have found that 15 second updates very annoying, when I know my GPS is more accurate then that. It's worse in the city where the streets are dense.
Good call on the Streets and Trips MOD... I have been looking for information on changing the update interval for several months now. The program is OK, but it does have something that my Rand Mcnally does not have.... the ability to generate Directions w/o and internet connection.
System in the works:
Celeron 850 or PIII 933, SB Live! Value into a stock 4 channel amp, ATI vid, 10.4" sharp LCD w/ allen's controller, Elo SW touchscreen overlay and controller, GPS, TV tuner, FW DVD drive, 4 port serial card, and some other stuff....