NAS without AD support, how to share it out to AD users securely

I've got a maxtor shared storage II drive, it is only network
accessible by eg : \\10.10.11.111\x


x being a folder associated with user administrator/same password as
the network admin. (ie: the maxtor NAS has no integration with active
directory, I have to manually key in user names and passwords which
must match the users in active directory, since I only know my
passwords, I cannot create a secure environment for users


(eg: \\10.10.11.111\user1 can see the contents of \
\10.10.11.111\user2 )


now, things would be fine if the maxtor device used nfs, then I could
use gateway for nfs and remap the whole thing in windows 2003 server
standard, but it uses UNC notation, I'm not sure what the protocol
is ? netbeui?


so what can I do? I can do a map network drive on the server so that
y: = \\10.10.11.111\x


but I cannot reshare out y:\user1 or y:\user2 (ie: \\10.10.11.111\x
\user1 and \\10.10.11.111\x\user2 respectively)


what can I do?

I've also tried dfs, but the original \\10.10.11.111\x folder must be
public (ie; doesn't work like a gateway software)