Selecting Combobox item with AS, not mouse?

How do I dynamically select an item from my combo box? I have a number of them built off of XML, everything works great, but depending on a users settings the default state from my combo boxes may be different. How do I select an item within the combo box with AS instead of dropping down and selecting with my mouse?

It seems that cb.getItemAt(1).label; only returns the data at that index, it doesn’t “select” that item, move it to the top of the list and activate my cb_Listener.change function. Any bright ideas? Something like this would be ideal:

cb.selectLabel(“label name one”);

Thanks folks.