NSArrayController + pull-down button

[phil at interalia.org (Phil Ulrich)]

I have an NSPopUpButton that I have set to be a pull-down button.  What 
I'd like to do is hook it up via the normal Cocoa Bindings to an 
NSArrayController in my project to provide its content objects.  
(Currently it's established programmatically.)  Here's my problem: 
whenever I launch the app, the first item in the array controller's 
objects overrides the title (and, actually, the icon) that I have set 
in Interface Builder for the pulldown.

Is there any way to tell one of the objects, either the pull-down or 
the controller, that I only want items 1 through n in the pull-down 
affected - not 0 through n?  Should I subclass one of the objects?

Thanks,
Phil Ulrich