Display a label in system tray

How do I display a label in the system tray ? I need to read the xl file created by my bandwidth meter and always display the MBs used in the system tray.Also is it possible to create a form that is semi transparent, It should be visible over any open w开发者_如何学运维indows, not hidden behind ?

To my knowledge, Windows is set up to draw icons in the system tray, not text. You could create a bitmap, draw text to the bitmap, then show that bitmap icon in the system tray.