denying folder creation

[Laurent LAVAUD]

hello,

    I would like to know if it is possible to deny a user the right to 
create subfolders

    For example, how can I tell that the user toto is denied the right 
to create the folder user.toto.myfolder

Thanks.

-- 
Laurent LAVAUD
Centre de Ressources Informatiques
Universite Bordeaux2
143 rue Leo Saignat
33076 Bordeaux cedex
Tel: 05 57 57 15 03
Fax: 05 57 57 45 42