Ok, sorry...English is not my first language, so I think I espressed my self really badly. I know the difference between keyboard and mouse! Ok lets make it simple...
for example: My aircraft has 2 fuel pumps. Thay CANNOT be activate with any buttons on my keyboard because if I go into my fsx, settings, controls, buttons keys, ther's nothing about the fuel pumps and so I cannot assign this command on my keyboard.
The only way that I can use them is to point with the mouse ( which is the little pointer on my screen) to the fuel pump switches, ( ONCE IN A COCKPIT ) and click with the left button on my mouse to put fuel pumps on or off.
Now my question is:
With fsuipc can I assign the fuel pump function on my keyboard? For example : letter A on my keyboard to put fuel pump on, and letter S on my keyboard to put fuel pump off.
I cannot make any clear than that, so if is still bad written apologize.