This is the current implementation I am using in my system.
If anyone has suggestions for some speedups and the like I am game
for that. Mostly this is to support a sorted list comming off a
proxy. Currently I am using web orb for the flash remoting which is
connected to a .net backend. I use lots of SortedList<> code
in the .net backend and I am recreating part of my thick client on
the web in flex.