Max, unfortunately WinCE 5.0 doesn't understand compressed CAB files so for the moment you'll need to unpack elsewhere and copy the files on to the device manually. Should work a treat then.
I can confirm now that SkyAngel InFlight will work on most WinCE 5.0 (and even 4.2) devices with standard GPS equipment. The requirement for the .net compact framework 3.5 has been removed ready for next week's release. I'm looking at getting SkyAngel packaged up and sold on these kinds of boxes since our charts are much better presented than most of the competition.
Lordhedges, our vector data comes from various locations. Does Airbox do photography now too!?