I had no problems at all with getting GPS to "work right out of the box" on my Fathom, other than the mentioned need to turn "Location On", which is something you need to do with most phones. Google Maps works. Bing works. Just slowwwwwwww to get first lock.
I, too, am now trying to get QuickGPS working. I have the latest (2010?) SDK Certificates loaded, but I still get an error msg about it being unsigned. Tried copying the modified QuickGPS.exe into the Windows directory. Tried the registry edit/tweek.