The Azure platform? Hmm..very interesting. A few days ago we try to find more information about this platform and the tools (Windows Azure SDK) and it only support Vista or Win7 for development environment.
Windows XP is still wide use among developer and me is one of them. Need 1000 USD or more to build new development environment for Azure platform. They said they will explore options to enable the SDK on WinXP, and we hope this will be done sooner.
It's seem Microsoft try to sell Vista to developer too, what a strange requirement considering we are building cloud applications to remove the underlying OS support.. lots developer complain about this Azure system requirements.
The only thing that we can do now is try to adding new features into our products and hope we can create new products for Azure platform sooner.