Yeghia,

To add the a for a shortcut to the menu item's caption you need to do 2
things:
1. Set in the property browser the menu item's ShowShortcut property to
*false*
2. Add the text for the shortcut to the menu item's caption. You have to use
an actual <tab> ASCII code to separate the menu item's name from its
shortcut.
AFAIK you cannot do that in the property browser, but you can do it from
code

menuItem.Text = "New\tCtrl+Alt+N";

Keep in mind that as long as you can set whatever text you want, the
shortcuts for the menu items has to one of the listed in the Shortcut enum
values, unless you don't do your own key handling.