As far as I know, this is not available in the Access ListBox. You may want
to go to http://www.lebans.com to see if Stephen Lebans has this capability
in any of his ListBox enhancements.
If you take a look at the following screen (it is search screen), the left
side is a listbox, and the right side is a sub-form.
I used a sub-form on the right side to display a "check" box in place of
true/false. I could have used a listbox, but then no cute check box. In
addition, as you can see, you get lines etc.