Here are the links and resources as discussed in my Building Windows Mobile Location Aware Applications talk.
- GPS Intermediate Driver Sample (From Windows Mobile 5.0 SDK)
PROGRAMFILES\Windows Mobile 5.0 SDK R2\Samples\PocketPC\Cs\Gps
- Open Cell ID (Free data project for cell tower lookup)
- Using FakeGPS
Side Note: Configure Settings->System->External GPS to COM2 9600 Baud
- Bing Maps Customer Service Site (Used to get tokens and credentials for web services
- Bing Developer Center Used to get AppId for AJAX and Silverlight integration