Hi, Which container class is recommended to store data associated with a treeview such as Delphi's TTreeView, the Virtual TreeView from Soft Gems or the TIWTreeView from AtoZedSoftware (IntraWeb components in Delphi) ? I want to search the container object, using the fast lookup mechanism, and create only the relevant tree branches. Is the fast lookup mechanism of hash containers available in the tree containers? Regards, Nols Smit