Irritating access rights problem

[Snapshot]

I'm using Robocopy in a batch file to mirror my WHS2011 server to my nas4free box. Robocopy can create new files and folders and delete orphans but what it won't do is overwrite, giving 'Access is denied'. The batch file runs as Administrator on WHS2011 and I've created Administrator with the same password under nas4free, putting it in the admin & wheel groups. I haven't touched any of the various CIFS/SMB advanced settings but a quick look at the on-line documentation shows that Store DOS attributes should have been enabled by default but wasn't. Is this likely to be the problem?
nas4free is running on version 2235.
I'd appreciate some helpful pointers.

[raulfg3]

post your folder permision and owner ( ls -l in the correct path).

PD: Store DOS atributes must be disabled.

[Snapshot]

Sorry, I'm a Unix/Linux numpty and need some help with the cd command to get to the shares. I understand the cd command, what I'm really after is the directory structure so I can get to to the shares.

[kenZ71]

Perhaps this page will help: http://mally.stanford.edu/~sr/computing/basic-unix.html

Or just use the file manager from the Web gui under advanced

[Snapshot]

File manager was the answer, thanks. Files all have the attributes -rwxrw-rw- and directories are drwxrwxrwx. Do I need the group to be rwx to be able to overwrite??