samba - Oct 2005 - Map between existing UNIX UID's and Windows SID for file sharing.

Hello,
I have search this list and the HOW TO's, but can't find the answer!

We have all our users on both Windows (ADS) and Solaris (NIS), but  I 
can not configure samba
shares so Windows Users can modify the security settings on there files, 
so that other people can look/edit
there files....

If I don't fix this problem soon we will end up with a Windows 
file-server as well as a UNIX one.
The web pages talk about mapping UID to SID, but it seems to used when 
you don't have one lot of
users on one of the systems, but we have all users on both systems. We 
have no problems with users
accesses there files (samba shares) from Windows PC.

Can some one tell me (a How TO will be perfect) how I can set up samba 
so that Windows users
can edit the security setting of the samba files. The easies option 
would be best at this time, unless
it is not possible!
# cat  smb.conf
[global]
        workgroup = DCSNT            # Windows ADS "domain name"
        locking = yes
        password level = 10
        domain master = no
        local master = no
        os level = 80
        wins support = no
        wins server = XXX.XXX.XXX.XXX   ##Windows ADS
        password server = hades eros               ##Windows Hosts
        security = domain
        encrypt passwords = yes
        preserve case = yes
        short preserve case = yes
        nt acl support = Yes

Thanks in advance,

Andrew