Hello I think is more easy write the GPS-Windows application using CASIO DT-X30 FoxPro and VS.NET
I just finish write a mobile application using WINDOWS CE 6.0 R3 SQLCE-.NET FRAMEWORK 3.5 VFP- SQL WEB EDITION.
The mobile device is CASIO DT-X8 IP67 Drop Resistance of 3.0 Meters.
I will be testing my application with others mobile device of PSION, and INTERMEC (all with Windows CE)

http://www.youtube.com/watch?v=J2ZmfcZpivc

regards

J2ZmfcZpivc