In my root node I want to put the attribute xsi:noNamespaceSchemaLocation so that I can get the document to validate

I want this
Code:
<CONTENT xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" 
xsi:noNamespaceSchemaLocation="ContentList.xsd">

But I keep getting this
Code:
<CONTENT xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" 
noNamespaceSchemaLocation="ContentList.xsd">
This is what I'm doing...
Code:
XmlDocument outputData = new XmlDocument();

XmlNode currentNode = outputData.AppendChild(outputData.CreateElement("CONTENT"));

XmlAttribute xmlAttribute = xmlNode.Attributes.Append(outputData.CreateAttribute("xsi:noNamespaceSchemaLocation"));

xmlAttribute.Value = "ContentList.xsd";
Does anyone know what I need to do? just point me in the right direction