Refer the below post by Bob.

http://www.microsoft.com/communities...b-addf84df10dc

If this post helps click Yes
---------------
Jacob Skaria


"Hennie Neuhoff" wrote:

A couple days ago you suggested this site, I've installed it sucesesfully -
it works great. Do you know if it's possible to include another level [level
4] which would be a submenu for items in level 3 ? I've tried it but did not
have any luck. Any ideas?
Thanks in advance.
--
HJN