By default, IIS 6.0 is installed in a secure mode that prohibits active server pages (ASP) and ASP.NET. This means that only static pages can be served. To enable these features:
1. Open the Internet Information Services (IIS) Manager
2. Select Web Service Extensions in the left pane
3. In the right pane you will see a list of Allowed and Prohibited web service extensions. Right click on the desired application and select Allow to enable it.