ADO.NET :: Displaying Linq In Web Page

I have gotten as far as joining tables successfully (three of them, no probs) and have placed the data in a "var course_units", which is then passed to the view with the statement:

// Create the view model
var viewModel = new CourseViewMapViewModel()
{
Categories = categories.ToArray(),
NumberOfCategories = (course_units.Distinct()).Count(),
Course_Units = course_units.ToArray(),
Weekly_Hours = weekly_hours.ToArray(),
Total_Hours = total_hours.ToArray(),
};
//Return the view
return View(viewModel);

Each element in the array holds 5 values, namely "National_ID", "SIN" etc. Now the first question: When I display an array element, the coloumn header gets added, which I don't want. How do I get it to not display it? My current ASP.NET looks like this:

<% for (var x = 0; x < t; x&#43;&#43;)
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; {%>
<td>
<table border="0">
<tr>
<td>
<%: Html.Encode(Model.Course_Units.GetValue(x)) %>
</td>
<td>
<%: Html.Encode(Model.Total_Hours.GetValue(x))%>
</td>
</tr>
</table>
</td>
<%} %>

The idea being that a <td> will display all of the values in Course_Units, one array element at a time. The current output is: { National_ID = ICAB4225B, SIN = D0057, Unit_Name = AUTOMATE PROCESSES, Acronym = SCR1, Core_or_Elective = Core IV }

Second question: If I wanted to select just the "National_ID", how do I do that? I've been searching the internet for a couple of hours now, no luck, more blame on me being a complete newbie, I think.