I did have something like that...back in win95/98 days...you saw the folder in the tree...but if you clicked it you'd have to type in the pass....otherwise you wouldn't see/access the contents....
Now I gotta go through the old cds, etc...to find/remember its name...
Something simple like that would be great.
Jafo is this it?
http://www.pc-magic.com/des.htm#mf