Help!! CTreeCtrl to CListCtrl

I'm writing a dialog base utility that presents the user with a CTreeCtrl from which they will select a directory. Once selected, I want the files contained in that directory to be listed in the CListCtrl. I've got the CTreeCtrl displaying properly and the CListCtrl will display hard coded directories.

I've been pulling my hair out for the past day trying to get this darned thing to work and don't have much hair left to pull. Any help appreciated.

Thanks in advance ... Don