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3) on your Mac (current instructions for Snow Leopard 10.6), go to the Apple logo on the top right of your computer, then, System Preferences, then Print & Fax icon. Open Print & Fax.
4) Unlock the permissions lock in the bottom of the page with your password if necessary.
5) click the + button. The "add printer" page will open. 
6) click the IP tab on top of that page.
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