Amazon does PowerShell
A suite of PowerShell cmdlets for managing Amazon Web Services has been released
http://news.techworld.com/virtualisation/3415262/aws-adds-powershell-continues-windows-push/?cmpid=TD1N11&no1x1&olo=daily%20newsletter
The cmdlets can be downloaded from
http://aws.amazon.com/powershell/
Information on using the cmdlets can also be found on this site