GPSToday installs as a today-screen plugin on your Windows Mobile internet-enabled device. At the most basic level, it keeps your GPS hardware primed whenever you need it. But that is only for starters. In general, it will significantly enhance the utility you derive from your device. Check the home page for a (nearly) full list.

Changes:

Does your device have an integrated GPS receiver?
Is your device subscribed to an unlimited data plan?
Is the device OS Windows Mobile 5.0 or above?

http://www.geoterrestrial.com/