Vista permissions vs. Netgear UNIX NAS permissions

Does anyone have any idea why, when I select the Read/Write option for
users and groups for various shares on my NAS, the Vista permissions
don't have Delete selected, thus only making it possible to delete at
administrator level?

When viewing permissions, even administrators can't view the contents
of the Auditing tab, although currently any user (both Windows and UNIX)
can take ownership of a file/folder, which, of course, I want to change,
but I don't want to affect the settings on my NAS.

Where NAS files show a combination of Windows and UNIX users and
groups, I'm also seeking advice on how best to configure.


--
daztrue