fujitstu-siemens laptop brightness

[Haris Bogdanovic]

Hello.

I have an Esprimo Mobile v5535 laptop by Fujitsu Siemens.
I can set monitor brightness by function keys Fn-F8 and Fn-F9 but every time
I shutdown the laptop and start it up again the brightness level is set to
factory default.
I would like to make a small program and make it start at boot time to
change brightness level to a desired value.
For that I would have to know IO address, memory address or something like
that where I could write the brightness level using C language or assembler.
Can anyone help me in that way ?

Thanks
Haris