Hi, Scenario: I have samba installed on a linux server in a primarily windows environment. We have AD, but I cannot join my linux server to the domain. I would ike to pass authentication info over to a windows DC though. I have a directory that I want to share from the linux server. I want to force users to authenticate and have the DC authenticate the user/pass. I don't want to have an equivalent unix user for each windows user, but I do want to limit by a list of users or a group. Once authenticated, all file operations can take place as a normal unix user I specify. As a first start I tried this: [GLOBAL] security=share password server = xxxxxxxxxx ldap ssl = no [GOUNIX] path = /var/www/sites/gounix.bpweb.bp.com/files/repository force user = www-data force group = www-data read only = No valid users = meecect create mask = 0774 directory mask = 0775 This let me browse the shares, but when I try to connect, a windows authentication box appears with the username area pre-filled and grayed out so I can't change the username. The username it had filled in was SERVERNAME\GUEST_ACCOUNT, where SERVERNAME was the name of the linux box, and GUEST_ACCOUNT is the name of a guest account I have on my PC. Any hints?