Cindy,
I don't have the answer to Shawn's question, but I don't exactly see how your answer is related to the question.
Running a service in Windows NT (/2000/XP) is a far different thing than showing a small icon next to the time in your address bar. As a matter of fact, I think there are almost no services which are shown as an icon, but if you install a program, say, for example: winamp, it will display a icon...
Just my 2 cents. Eurocents, in my case
Greetings, Erik