Can I Access A Database Backwards? (I Really Want To Display The Information Backwards Actually).

 I am new to accessing sql stuff and asp.net I have some code in a .cs page that accesses a sql database and displays the information on a page from top to bottom (press releases:  www.managewatch.com/press).  I created this site but I used the code from the old site and just implemented it.  I'd like to have the press releases display from newest on top to oldest on bottom.  Is there a way I can do this?  I have included the code in my cs page that does this:
 
    protected void Page_Load(object sender, EventArgs e)
    {
        // connect to db
        SqlConnection db = new SqlConnection(ConfigurationManager.ConnectionStrings["xxxx"].ConnectionString);
        db.Open();

        // Initialize Objects
        SqlCommand cmd = new SqlCommand();
        cmd.Connection = db;
        SqlDataReader row;
       
        // COUNT PAGES ########################################
        cmd.CommandText = "SELECT * FROM press";
        row = cmd.ExecuteReader();

        while (row.Read())
        {
            Literal pressReleaseTitle = new Literal();
            Literal pressReleaseBody = new Literal();
            pressReleaseTitle.Text = "<div id='pressheader'>" + row["title"].ToString() + "</div>";
            pressReleaseBody.Text = "<div id='pressbody'>" + row["content"].ToString() + "</div><br>";
            lblPressReleases.Controls.Add(pressReleaseTitle);
            lblPressReleases.Controls.Add(pressReleaseBody);
        }
        row.Close();
        db.Close();
    }
I can see what is happening here "cmd.CommandText = "SELECT * FROM press";" tells it to get all the info from "press" but I just don't get the " row = cmd.ExecuteReader();" part. Is this just grabbing one line of the database? what does this code do?
 
Thanks!