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Is that cable? DSL? Locally, cable connections are usually pretty easy, but DSL needs a particular setup.
But if he's set up for a specific provider elsewhere, he may need to change some settings. If he's hooking up to a wireless router, he should be able to do a search for connections. If it's cable, he may have to tell the computer to automatically detect settings in Internet Options in the control panel.
If it's DSL or wireless, he may have to change settings to static instead of DHCP, and then use the settings provided by the ISP.
"Cox Communications" does not tell us anything about what specific kind of connection we're talking about. (Not me, anyway.)