Pocket PC 2003 - Disable Hardware buttons

Question

Hi, to any one out there!!! Could any one help me- I realy thankfull for your help: I have a iPAQ H5400 series - That is running Pocket Pc 2003 - and I would like to write a C# program that will disable or remap the hardware buttons; such as "itask", "Calender", "Inbox" and so on. Thank to anyone who could help. Please!!!