How to get XML data out of an XML file

I am trying to retrieve the Parameters first or second (0, 1 ,2) node from the following XML file:

<?xml version="1.0" encoding="utf-8" ?>
<Robot xmlns="http://tempuri.org/RobotDefaults.xsd">
<Parameters>
<Name>Decker</Name>
</Parameters>
<Parameters>
<Name>A</Name>
</Parameters>
<Parameters>
<Name>B</Name>
</Parameters>
</Robot>

There will be more data than just a name for each Parameters node. Here is my code:

Code:

---

        Dim node As XmlNode = xmlDocument.SelectSingleNode("/Parameters")
RobotName.Text = node.SelectSingleNode("Name").InnerText

---

I get the dreaded "Object reference not set to an instance of an object." The SelectSingleNode is not working because I am too dense to figure out how to write the syntax for the XPAth. I have read the documentation all morning and am still having trouble.

Can anybody show me how to retrieve the "x" number Parameter node from this document?

Thanks,
Eric