The site: modifier often helps to find what you are looking for in Google. Also, quotations marks help narrow your search.
For example, try this search in Google:
Code:
"msn connect" homepage site:microsoft.com
The first result is the one you are looking for, the
Live Communications Server 2005 Public IM Connectivity Overview.
For other readers of this thread, MSN Connect is a subscription service that enables real-time IM communication and collaboration with customers, business partners, and vendors on the public Microsoft Messenger network, while providing management and control functionality to the businesses who pay for the subscription.