Sharepoint launch showing IIS not installed error

I have installed sharepoint 2007 on my windows server. When i try to launch it through the configuration wizard, it gives this alert error:

Internet information services not installed

I have already installed IIS. Then, why is this error coming. Thanks in advance.

Solution

Which version of IIS you are using?

If you are using Windows Server 2008 Server Manager or IIS7.0 then you need to provide IIS6 management capability role to work with Moss2007.

Follow these steps to resolve this issue.

Open Server Manager, go to Roles and right click on Web Server
And in the window that comes up, enable the option that says IIS 6 Metabase Compatibility (Installed)