>Depending on my system' preferences, I need some menu prompts to appear or not (not just to show them disabled via 'skip for' option).
>
>Please tell me how to do it. Thanks.

In addition to what Sergey has told you, look in the help file at the PUSH MENU, DEFINE MENU, DEFINE BAR, etc. commands. Since VFP menus are based on a LIFO stack, it's pretty easy to do things like adding or removing a menu via PUSH/POP.