Thank you,toothandnail.In my /etc/x11 there are xorg.conf-fbdev and xorg.conf.-in. Should i edit both of them?There's also xorg.conf-vesa but it's blank.
That sounds as though there has been a problem during the install. There should be a file simply called xorg.conf. Its also strange that xorg.conf-vesa is blank - that is usually a safe fall-back option when the video card is not correctly identified. What video card does your machine have?
Another question:where did you get VL 5.9 rc2?The latest version on Distrowatch is rc1.

Have a look in the forum. For instance, check this out:
http://www.vectorlinux.com/forum2/index.php?topic=4785.msg31524#msg31524P.S.:I have changed both files like this but no way:
Section "InputDevice"
Identifier "Keyboard0"
Driver "kbd"
Option "XkbLayout" "it" ## KEYBOARD_MAP!
Option "XkbModel" "pc105" ## KEYBOARD_MODEL!
Option "Xkbvariant" "" ## KEYBOARD_VARIANT!
EndSection
Where am i mistaking?
I'm afraid that wouldn't help - you really need a correct /etc/X11/xorg.conf. That is the only file that X will read during startup for settings.
paul.