samba - Aug 2005 - PDC Question: Can we create Login Policies for Win Clients

Hi Guys...
I have queer requirement from one of my customers, who wants to enforce,
login times, I dont know if this is possible at all, with Samba PDC,
with LDAP backend, which I have configured at the client place. I
suppose this refers to policies.

Any pointers or suggestions ?

thanks
Sanjay Upadhyay