Vistas:

Behavior:
DocuWare context-sensitive help will not open and display on Windows Vista and Windows 7, since the WinHlp32.exe file is not supplied with Windows Vista and Windows 7.

Solution:
If you wish to use context-sensitive help on Windows Vista or Windows 7, you must download the WinHlp32.exe file for Windows Vista or Windows 7 from the Microsoft Download Center and integrate it in your system.
Link to download file for Windows Vista
This Microsoft page also contains a link to related Microsoft Knowledge Base articles.
Link to download file for Windows 7