Well, its seems that a native treeview control may be in the works for a future version of LV as was hinted on info-labview. If you can't wait that long then you will notice that a modified multicolumn listbox exists in LV that will give some similer functionality. Below is an excerpt from some posts on info-labview on how this control works and how to get it:
Enjoy
Michael Aivaliotis
Jeff,
I asked around and I got the following response:
For each data member, you will need a unique URL. There is not a way to bundle them into one URL.
Randy Hoskin
Applications Engineer
National Instruments
Sorry,
Michael Aivaliotis