
As Petah said...
Look into winbind. You can set up Windows users as Unix users, in the style of username = "MYDOMAIN+arkadiy". You can then log on as that user on the unix box, and winbind will hand off the authentication on the share to your Windows domain controllers/AD.
Many fears are born of stupidity and ignorance -
Which you should be feeding with rumour and generalisation.
BOfH, 2002 "Episode" 10