[Samba] admin users not granted administrative privileges

[Yuci Gou]

Dear all,

When I create a share with the "admin users" permission (see smb.conf) 
and map a drive to it from win2k, it does not allow me to: 

Edit files
Create files
Remove files
Add Directories
Remove Directories

Each time it gives me a permissions error.

And I ever tried adding user1 to the UNIX group that maps to the Windows 
Domain Admins group:

net groupmap modify ntgroup="Domain Admins" unixgroup=admins

Then add "user1" to the admins group in the /etc/group file, but it still 
doesn't work. 

Could anybody shed some light? Many thanks,

Yuci

-------smb.conf-------
security = user
valid users = user1
admin users = user1

-------samba version -------
3.0.1