tootip or microhelp for menu items

Tech Tip: Click here to run a free scan for Windows Errors and optimize PC performance

I was able to set tooltips on objects other than main menu.
I would like to get the effect of tooltip or microhelp in the bottom status
bar when the mouse is hovering over a submenu item.

How do I do that?
For example in outlook express, when one expand a main menu item and holds
mouse over one of the enable sub menu item, one would see some sort
microhelp text in the status bar in the bottom


.