[Samba] Permissions on Windows machines

I am trying to backup a Windows XP Pro machine
with BackupPC running on a Fedora-11 machine.

Let me say at once that I know very little
about Windows XP;
the machine I want to backup belongs to a relative
who does not run Linux.

The problem seems to lie with reading permission
on my Windows client.
Thus I can
sudo mount -t cifs harriet:C /mnt/win
and can list the files /mnt/win .
But I get refused permission to read most of them, eg
-------------------------------------
[root@helen tim]# cd /mnt/win
[root@helen win]# cd Documents\ and\ Settings/
[root@helen Documents and Settings]# ls tim
ls: reading directory tim: Permission denied
-------------------------------------

Is there a document that explains in simple language
how to change Windows permissions explicitly for samba?

Any suggestions gratefully received.

--
Timothy Murphy
e-mail: gayleard /at/ eircom.net
tel: +353-86-2336090, +353-1-2842366
s-mail: School of Mathematics, Trinity College, Dublin 2, Ireland

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