Disabling screen saver

Please refer to attached .jpg file. I am unable to disable screen saver. This option is greyed out for me. How can I do it?

Will this help?

http://www.askdavetaylor.com/how_do_i_stop_windows_xp_screensaver_asking_for_my_password.html

Or one of these?

http://www.google.com/search?hl=en&sa=X&oi=spell&resnum=0&ct=result&cd=1&q=disabling+xp+screensaver&spell=1

What about selecting the Drop-down arrow and select (None)

Are you running a computer into a domain?
This option is (could be) restricted in computers into a domain…

Yes it is in a domain. Is it possible for me to disable?

I never found a way to do so… It’s necessary to dig on Windows Registry and change access rights. There was not a trivial solution… Although, it’s possible to change the number of minutes there. Do you wish to do so?

I am on business trip and if something happens there is no support around me. So NOT at the moment.

We’ll be here…