To enable ASP support on IIS (ASP support is disabled by default), follow the steps below:
IIS 6
* Go to Start - Settings - Control Panel
* Open Add or Remove Programs
* Click on Add/Remove Windows Components
* Select Application Server and click Details
* Select Internet Information Services (IIS) and click Details
* Select World Wide Web Service and click Details
* Make sure that Active Server Pages is installed. Check the box next to it, if it is not installed
* Click OK - OK - OK - Next
IIS 7.x on Windows Vista or Windows 7
* Navigate to the Control Panel
* Open Programs and Features
* Select Turn Windows features on or off from the left sidebar
* Expand Internet Information Services > World Wide Web Service > Application Development Features
* Select ASP, then click OK
IIS 7.x on Windows Server 2008 or Windows Server 2008 R2
* Navigate to the Server Manager
* Expand Roles then select Web Server (IIS)
* Under the Role Services section click Add Role Services
* In the Application Development section check ASP and Add Required Role Service (if prompted)
* On the Confirm Installation Selections page, click Install