IIS 7 and IIS 7.5

The IIS version for Windows Server 2008 (Vista) is IIS7 and the IIS version for Windows Server 2008 R2 (Windows 7) is IIS 7.5. read more information about specific details. At the moment it is not clear for me what the difference are for configuring a web application in IIS 7 and IIS7.5, specially for the web.config. When I know more about this, I will blog this....