Retrieving/Displaying Search Results

Lets say I was going to make a Console Application, that did this:
It uses: URL
That is a search Engine for weather...

So on my console application I have it pop up, and say:
' Enter the ICAO Code ' (Lets say the user enters this)
KDFW

By using the search engine on the link I provided above, the user could hit 'enter' then the program would retrieve the current Weather/METAR report for KDFW....

I actually want to make it a Windows Application.
But, I figured I should start simple, and do Console First....

My question is, how would I use a search engine like that?
For those of you who are interested, I put the code for the ConsoleApplication below, its not much, because as I said, Im not sure how to use search engine's in this way yet...
Do any of you know?

Labbat

using System;

namespace ICAO
{
///<summary>
///Demonstrates how to Send/Recieve data from NOAA
///</summary>

class ICAO
{
static void Main(string[] args)
{
string weather;
Console.Write("Enter The Four Letter ICAO Code:");
weather = Console.ReadLine();
}
}
}