Windows Messenger Internet Explorer Protocol Extension is a simple extension to incorporate Windows Messenger 4.x features into Internet Explorer 4.x. It adds new features like: Use "im:john@doe.com" in the Internet Explorer address bar to directly open a Windows Messenger chat window; Use "Start | "Run" and enter "im:john@doe.com" to open a Windows Messenger chat window directly; Maintain Windows Messenger contacts in Internet Explorer favorites; Add Windows desktop shortcuts to directly open a Windows Messenger chat window with a contact; Add a custom toolbar to the Windows taskbar with Windows Messenger contacts.