Whether you are using Inmagic CS/TextWorks (v.9 or less) or Inmagic DB/TextWorks (v.10 or less) on Vista, you will see something like the following error message when you try to use Help.
Why is that? Well, it's a long story* but the gist of it is, the help file was created in a format that is not, by default, supported by Windows Vista.
Fortunately, you *can* go and download the software which will let Vista use these older-style help files. (Anything that has the *.hlp filename extension.)
Get WinHlp32.exe for Windows Vista: http://go.microsoft.com/fwlink/?LinkID=82148.
* Okay, fine, here's the long story (taken verbatim from Microsoft site): "Windows Help (WinHlp32.exe) is a Help program that has been included with Microsoft Windows versions starting with the Microsoft Windows 3.1 operating system. However, the Windows Help program has not had a major update for many releases and no longer meets Microsoft's standards. Therefore, starting with the release of Windows Vista, the Windows Help program will not ship as a feature of Windows."
How Microsoft can get away with the cussed irony of condemning their own software for not meeting their standards is beyond me.