Eh?

The Checked property is a Boolean value (True or False).
Supposing your menu item is called mnuChecker:
Code:
mnuChecker.Checked = True     'when the tick is present
mnuChecker.Checked = False    'when it isn't.
To programatically check it yourself:
Code:
mnuChecker.Checked = True
To toggle:
Code:
mnuChecker.Checked = Not mnuChecker.Checked
Hope that helps, if not submit some more info (in English).

Toot