This Example Shows All Possible Combinations of NotifyIcon, Taskbar and Much More. All Possible Tricks For NotifyIcon, Taskbar, Invisibility, Restricted Exit, Shared Context Menus, Multiple Context Menus, Microsoft ClickOnce Deployment Technology, ClickOnce Automatic Update

SEHE is an example of how to use the Skype API. The full C# project, including source code, and heavily commented is available for download.