How to allow multiple entries from a Password InputBox

This works:

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How can I add a second option so that if they enter the ADMIN password or the GENERAL USER password it accepts either one?

ADMIN_Password is the Named Range of the ADMIN Password
User_Password is the Named Range of the General User Password

I tried to add an OR but it didn't work:

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Thanks this works. At first I didn't think the AND operator was correct but now I see that it means If the password is not =ADMIN and the password is not =USER then fail.
& it works with or without .Value

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Thanks a bunch.

PS. I'm using Excel 2000, I hope I don't have any trouble when we upgrade.
BTW, my ADMIN_Password Range is only one cell