Granting access to NTFS drive

Hello all.

I have a portable NTFS formatted harddrive. I replaced the default
'everyone' access with 'my computer\administrator' access while the
drive was hooked up to my desktop computer (XP professional).

Now I want to allow another user (my notebook's administrator) to
access it as well. So that only my two computer's administrator users
could access the disk. My notebook has XP home edition on it. How do I
go about doing this?


TIA
Adeel


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