??? Make JComboBox drop UP instead of DOWN ???

I have an applet which has a couple of JComboBoxes at the bottom. The user is complaining that when the combo boxes are expanded, the drop down list goes off of the screen; it is hidden by the NT taskbar. I have set the max row count on the combo boxes to 2, so that only 2 items in the list are displayed at a time; therefore, not being hidden by the taskbar. However, this is still not acceptable. They want the combo box to drop UP when expanded -- instead of the list going down, it should go up. How do I programmatically demand that when these two combo boxes are expanded that the item list is displayed above instead of below?
Your help is GREATLY appreciated!

hi
where ever you set the size of the screen do -30 for the toolbar and the combobox will go up automatically
fred

Thanks for your reply Fred. Could you please clarify what you mean, perhaps with a code sample? Do you mean to do:
JComboBox cbo = new JComboBox();
cbo.setPreferredSize(-30);
I don't know if this will compile - setPreferredSize expects a Dimension object. Or, when you are talking about the size of the screen, what exactly are you talking about? I let the applet determine its preferred size. In my html file that loads the applet, I set the size there specific to the size that the browser needs to be.
I appreciate your help, but I'm afraid I need a little more clarification. Thanks again for your time!