Remove Sub Folders

Hi,

We are currently evaluating this control and its perfect except for one requirement. The problem is, we have a folder with many subfolders. These subfolders get administered by different people, so they should only see the folders they are allowed to see. 

Is there any way to remove them from the view? The RemoveSubfolder seems like the perfect function, however is seems to do nothing. 

I've looked at setting permissions, however the best i can set is "ReadOnly". This is no good however, because they are not allow to see the files in the folder.

ideas?

-Shane