One of my favorite features in IIS 7.0 is shared configuration. It makes setting up and maintaining a web-farm a piece of cake. Here are some articles I found on the topic.
Shared configuration
http://learn.iis.net/page.aspx/264/shared-configuration/
Introduction
http://learn.iis.net/page.aspx/211/shared-configuration/
Configuring a Web Farm Using IIS Shared Configuration
http://learn.iis.net/page.aspx/453/configuring-a-web-farm-using-iis-shared-configuration/
Pondering Thought 