Method 2

Use the IIS IisExt.vb command-line script to add the executable to the WSERL.

1. Open a Command Prompt window and change to the System32 folder
   (typically c:\Windows\System32)
   
2. Type the following:

iisext /EnFile C:\Program Files\ISE\EnterpriseSCHEDULE\SCHEDULE.CGI

You should see the following response:

Connecting to server ...Done.

Enabling extension file complete.

For more information see the Microsoft Knowledgebase article 328360 and Configuring CGI Applications pages.