If you cannot open the ScAIEdit III Help File, it's highly probable your computer doesn't support HTML Help. To install the HTML Help support, please visit this URL :

http://msdn.microsoft.com/library/tools/htmlhelp/wkshp/download.htm

Click on "Download Hhupd.exe" and once you've completely downloaded the file, open it and the support should be installed. Now you will be able to open the ScAIEdit III Help File and read it.

Good luck!
- Gold Dragon