Restrict access from another user to the NTFS partition

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http://askubuntu.com – It is possible somehow restrict access to a partition to a specific user in Ubuntu? I am using Ubuntu x64 11.10, I made 2 accounts, both accounts belong to the Administrators group. And I have 3 partitions, on first is OS formatted in ext4, the second one is swap, and the third one is partition designed for data storage, formatted in NTFS, now I want to restrict access to the third one for second user, or hide it. And by the way, the NTFS partition is set to mount automatically at start up. (HowTos)