HOWTO add new menu item to the beggining of the menu

[Michal]

Hallo Group Readers!

I have NO problem adding new item to the end of the menu. For example:

(define-key c-mode-map [tool-bar csearch-forw]
              `(menu-item "csearch forward" csearch-forward
                          :image (image :type xpm :file 
"/tmp/right-arrow.xpm")))

But how to add it to be the first element in a menu?

best regards!
Michal