In the xml file properties window in visual studio, you can select xsd for verification. Click the "..." button for the "Schemes" property and delete your scheme from the list (if it is not in the list, click the "Add" button and select a file). You will then receive warnings when your xml is invalid, and you will also get intellisense when editing xml. 
Additionally (but it is not only required for verification in Visual Studio) you can also specify the namespace of your xml, it must correspond to the namespace that you defined in your XSD, and it can be an arbial string (usually a kind of URL) .
<?xml version="1.0" encoding="utf-8" ?> <myrootelelemt xmlns="http://somearbitarystring.com/somemorestring.xsd"> ... </myrootelement>
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