locking directories in CVS

[Saima Iqbal]

Hi,
          I was wondering if there is a way to lock all but  a few selected
users from creating directories/files at a certain level in a repository.  I
tried making the parent directory read only, but then that interferes with the
checkout of the directories within.   The objective is to keep developers from
creating files/directories in the repository, without limiting their ability to
checkout any file/directory.

Thanks,
Saima