show multiple trees in a single tree View

Hi,

I have an array of treeViews, say treeNB[i];

Is it possible to create a new Tree having the structure

Root
  - TreeNB[1]
  - TreeNB[2]
  -...

I don't want to copy the nodes as the nodes in treeNB have a lookup associated with their names and I want to keep that lookup intact.

Thanks,
Ani