For this book, we need a PC running Windows XP or 7. We also need either Visual Studio 2008 or 2010, or if both are not available, we can go for Visual Web Developer 2010 Express Edition. SQL Server 2008 Express also needs to be installed. We need to install the Windows Azure Tools for Microsoft Visual Studio, and depending on the OS and Visual Studio used, there may be some additional hotfixes. A complete list of requirements can be found at http://msdn.microsoft.com/en-us/windowsazure/cc974146.aspx.