CommandBox Shortcut Keys

A few questions when creating controls in code...

I've added a ComboBox control to a CommandBar toolbar.  When the user enters a shortcut key (CTRL + B) I want the Combox list to drop down, so that the user can then use the arrow keys to select an item.  I can't get this to work (entering CTRL + B) does nothing best I can tell.  I already know how to add shortcut keys, so that isn't the issue here.

Second, I'm using a StatusBar control to provide user feedback in most cases regarding the use of a control.  However, I still can't figure out how to show tootips (in code) for toolbar controls, which I need to do on occasion.  Please advise.

Third, how can I use shortcut and/or accelerator keys with a TabControl?  I assume I can add a TabControl to the tab list, so that users can navigate through the tabs using theri keyboards, correct?

Fourth, is there any way to right-align the text in a StatusBar panel?

Finally, I don't see any property for the ComboBoxes in a CommandBar which is similar to the VB ItemData property, where you can store data regarding each item in the list (so I am currently using an array to store the data I need).  Is this correct (meaning I need to use an array)?

Thanks!