Requirements: Microsoft ActiveSync Microsoft Windows 2000/XP on desktop Pocket PC 2002, Windows Mobile (Pocket PC 2003) or Windows Mobile 2005
Overview: PocketKiosk Builder is a developer tool using which any Pocket PC applications (.exe/.vb) or .NET CF applications can be run in fullscreen Kiosk mode on a Pocket PC device.

Benefits
Achieve full user productivity by ensuring that only single application is running.
Avoid accidental device data or system corruption by inexperienced users.
Reduce device maintainence. For e.g. Ensure increased battery life by making sure unwanted applications are not allowed to execute

More Info:

http://www.askarya.com/pocketpc/pocketkiosk/pk.asp

How to register:
run the patch on ur desktop
register wth any number
get ur real registration code & register wth it
enjoy
all credits to SyMPDA