Populating a series of lists?

I want to substitute a series of lists for a tree structure (like Mac OS X does when you shift the Finder into View > Columns mode). When a visitor first views this Flash file, he sees a single list on the left side of the page. When he clicks an item in that list, a new list (full of items from the second tier of the “tree” hierarchy) appears. When he clicks an item in the second-tier list, a third list appears and so on until he finally clicks a “terminal” item. At that point, the information associated with that “terminal” item appears in a panel to the right of the lowest-level list. Crudely rendered in text, it would look sort of like this:

             [font=Fixedsys]| a |_____| d |____| g |
             | b |_->_| e |_->_| h |_->_| item information |
             | c |_____| f |_____| i |

I looked at Kirupa’s Creating a List Box example and that got me started, but I don’t know how to daisy chain a series of list boxes together, making them visible as I go along. Any tips or pointers to other pertinent examples would be appreciated.

Thanks!

Scott
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