>i have the code to deactivate the windows key on the keyboard and the context menu (right click on the taskbar) from the registry. but the values of these two keys are not updated automatically. they take effect when i restart the computer. somebody told me on the thread that these values are read once at the starting of windows.
>How can i force these value to be updated automatically in the registry ?

You are trying to do something that Windows is not meant to do... I would stick with the constraints of the OS - otherwise you may cause yourself a lot of grief.

BTW, you need to be careful when installing an application and taking control of a computer...