This is something all you IIS admins are going to get a kick out of me not knowing already.
The IIS Admin tool has a nifty-looking feature that lets you back up the configuration of a web site, and a tool that will allow you to load that configuration on another server. I thought this looked like an awesome idea.
Here's the list of stuff it DOESN'T think is part of the web site when you back up the configuration:
Any contained virtual directories
Any contained virtual sites
Any contained applications
So basically if you have a website and use this tool to back up...