You can't do this so easier.
One way: Make the KEY of Child 3 bigger than Child1 and smaller then Child2 and set the treeview.Sorted=.t.
Other way is to rebuild the whole treeview and make sure yo add Child3 Before Child2
Against Stupidity the Gods themselves Contend in Vain - Johann Christoph Friedrich von Schiller
The only thing normal about database guys is their tables.