Hi,
I have posted a new blog on using IIS Powershell Provider cmdles comparing IIS UI.
This documentation could be used to learn how to utilize IIS Powershell cmdlets for the tasks you have been doing with IIS UI.
http://blogs.iis.net/jeonghwan/archive/2008/07/30/iis-powershell-user-guide-comparing-representative-iis-ui-tasks.aspx