The package contain the VAC.CHM file that is a HTML Help format file.
To view such files, you must have the Internet Explorer 4.0 or later.

If you have trouble with viewing the HTML Help files, please download
an update from Microsoft (it's free). First, try the link:

http://msdn.microsoft.com/library/default.asp?url=/library/en-us/htmlhelp/html/hwmicrosofthtmlhelpdownloads.asp

If the link doesn't work, visit the http://www.microsoft.com, paste the
string "Microsoft HTML Help Downloads" to the Search field and click
Go. The proper links will be shown.
