I just installed Tray Status Pro. I have to say, nice product. Modestly priced, simple to install, simple to register, does exactly what it needs to do and no more, icons on task bar are clear, attractive, readable and thankfully very small and unobtrusive. I do a lot of custom keyboard layout development, and my wireless keyboard only shows Caps Lock - and then only temporarily to save power. So, these on-screen icons are quite helpful. I also like that fact that it's easily configurable, so that if I care about Scroll Lock today but not tomorrow, it is fast and easy to change my mind. The interface is so intuitive, I understood in minutes exactly what I needed to do and how to do it.
-- Robert H.