My little notification class (:

Notification.cs

/* Create a form, controlBox and everything turned off, so there are no Window controls on it.
 * Put a label on it (lblNotification) and a timer, I used a tick of 2500, and you're set!
 * Call Notification n = new Notification("Some text", false); - the instance kills itself after 2.5 seconds (with timer tick of 2500)
 */
    public partial class Notification : Form
    {
        public Notification(string txt, bool perma)
        {
            InitializeComponent();
            this.Show();
            lblNotification.Text = txt;
            this.Left = Screen.PrimaryScreen.WorkingArea.Width - this.Width;
            this.Top = Screen.PrimaryScreen.WorkingArea.Height - this.Height;
            this.Opacity = 0.7;
            if (!perma) timer.Start();
        }

        private void timer_Tick(object sender, EventArgs e)
        {
            this.Dispose();
        }
    }