Newbie question: How to run my .cs file?

I tried to search for this topic but I couldn't find anything, maybe because it's too simple. I'm having a hard time understanding a really simple feature which is how can I run my .cs file?

I am actually following the video instructions on WatiN here: http://watin.org/documentation/getting-started/

Here is my 24 line code:

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using NUnit.Framework;
using WatiN.Core;

namespace GettingStarted
{
[TestFixture]
[RequiresSTA]
public class Class1
{
[Test]
public void Should_start_automating()
{
using (var browser = new IE("google.com"))
{
browser.TextField(Find.ByName("q")).TypeText("Hello Larry");
browser.Button(Find.ByName("btnK")).Click();
}
}
}
}


My problem is once I typed the code verbatim, I don't see a Run option like in the video about 2/3rds way through. I have tried going to Test--> Run --> Tests in Current Context but then it tells me my compilation suceeded but it cannot run because tests aren't loaded. All the searches I've done on loading tests seem to be a miss. I'm definitely not understanding something and would really appreciate a guiding hand on here.

This really isn't a C# specific issue. Try contacting WatiN...

http://watin.org/support/

Are you using Visual Studio? Try F5 to start debugging...(start the application in debug mode).