The first thing you’ll want to do is go to the Twitterizer link above and download the Twitterizer.DLL

http://code.google.com/p/twitterizer/downloads/list

protected void Page_Load(object sender, EventArgs e)
{
    Twitterizer.Framework.Twitter twit =
        new Twitterizer.Framework.Twitter
            ("Dave_Bush", "password");
    twit.Status.Update("Test message from " +
        "twitterizer.  See the code in " +
        "tomorrow's post.");
}