Hi Neil.

>> When entering the combo box, some of them will allow the user to scroll through the list using the down arrow key, while a couple will only scroll using the up arrow key. (Mouse arrows behave 'normally'.) <<

I really must have taken my stupid pills today < g >. A couple of what? Keystrokes? Which keystrokes?

Alt+DnArrow or F4 will drop the combo's list. Cursor keys, unless there is some code preventing their normal behavior, will allow the user to traverse the list (unless, of course, this combo is in a grid).

I'm sorry, but I do not understand what it is you are trying to do here.

Marcia