The solution is very simple, all you have to do is enable CGI and ISAPI in IIS! The following instructions apply to Windows 7 however they are very similar in Vista.
- Open Control Panel -> Programs
- Select "Turn Windows features on or off"
- If "Internet Information Services" is not already selected make sure you select it.
- Expand the "Internet Information Services" Node
- Expand the "World Wide Web Services" Node
- Expand the "Application Development Features" Node
- Check "CGI", "ISAPI Extentions", and "ISAPI Filters"
- Hit "OK"
- If you have the ColdFusion post-installation screen still open in your browser "refresh" it.
- If you don't still have the screen open re-install ColdFusion and this time the post-installation script should run just fine.