IIS 6.0: HTTP Error 404 - File or Directory not found

By default, IIS installed on any version of the Windows Server 2003 family serves only static content. To allow IIS to process dynamic content such as ASP/ASP.NET, administrator can enable this content from Web server extension node.

Here is a step-by-step to do it:

1. From IIS Manager, expand the server node and then select web server extension node.

2. On the right side pane,click the extension you want to enable .

3.  Click the Allow button as shown below.

Now your done. Your webserver can now serve dynamic contents