http://axel.cfwebtools.com/Examples/filterATreeInFlex/bin/filterATreeInF\ lex.html <http://axel.cfwebtools.com/Examples/filterATreeInFlex/bin/filterATreeIn\ Flex.html>
I blogged about it here... http://axel.cfwebtools.com/index.cfm/2007/5/1/Using-a-Data-Manager-and-F\ iltering-Data-In-A-Flex-Tree-even-the-nodes it's a pretty lengthy blog... but the just of it is, you can filter data into the nodes of a tree, and works rather well if you have something you want to find quickly.