SAMBA forced pwd change

[happy at mail.gmct.cz]

Hi,

I'd like to know if there is any way to force users to change their 
passwords periodically.

I have a samba server running on Linuz 2.0.35, the workstations (30) 
run Win95. 

I mean something simillar to Netware, where the users get a messages 
"you must change your password, because it expires" or so.

Thank you,
Peter