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/