How to disable taskbar in Windows CE 5.0

Question

I have a .NET CF v2.0 Windows applicatiion that runs in Windows CE 5.0 OS in a fullscreen mode (I am not using AygShell API as it is not part of the Core volume license).

I would like to disable the taskbar. The registry settings such as,

;;----------------------------------------------------------------------------
;; Auto Hide Task Bar
;;----------------------------------------------------------------------------
[HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Shell]
[HKEY_LOCAL_MACHINE\Software\Microsoft\Shell\AutoHide] 
 "Default "=dword:1 
[HKEY_LOCAL_MACHINE\Software\Microsoft\Shell\OnTop] 
 "Default "=dword:0 

did not help much.

There is one way, which is to replace the explorer.exe with my application's full path in the HKEY_LOCAL_MACHINE\init\Launch50, but I have kept that a the last option.

I would appreciate your great help.

Thanks.