Cannote delete, chown, or chmod files

[drkaz]

I'm running Snow Leopard and have an Iomega ix2 NAS. I need to delete all the files on my NAS. There are 3 files in directory entitled .AppleDB

-r--r--r-- 1 kaz staff 32768 Feb 17 13:23 cnid2.db
-rw-rw-rw- 1 kaz staff 0 Oct 4 10:07 db_errlog
-r--r--r-- 1 kaz staff 0 Oct 4 10:07 lock


I have tried

rm -rf,
chmod 777

(all with sudo)

and I get messages that I'm unable to change the file mode, permission denied.


Any ideas on how to delete these files from the NAS?

Thanks