Thanks Tobey for putting this tutorial together.
I got the GPS on my HTC S640 working now ... Google Maps showed 10, 11 satellite locks, and I hope to get the Garmin XT for it soon.

One thing though, I found I have to have the qcmdmxp.sys installed on my Windows XP computer in order for it to work. Maybe I was doing something wrong previously, but my phone was not detected by QPST until I have this file installed.

Another thing I experienced ... had heck of the time getting the code using getSPC due to the fact the S640 is a non-touchscreen device, and guess this prog was designed for screen input.

Thanks again for your effort !!