Help files under Windows Vista and Windows 7
                            Home pageThe following utilities are provided by Microsoft
Please look at this link
Read the INTRODUCTION and scroll down and click on the appropriate link
Download WinHlp32.exe for Windows Vista
http://go.microsoft.com/fwlink/?LinkID=82148Download WinHlp32.exe for Windows 7
http://go.microsoft.com/fwlink/?LinkId=166421Download WinHlp32.exe for Windows Server 2008
http://go.microsoft.com/fwlink/?LinkId=114216Then click where it says
Continue Validation required
and follow the instructions
Choosing a suitable installation folder
The default Destination Folder is usually C:\Program Files\program .
For Vista and Windows 7 systems you should not install to C:\Program Files
but create a new folder directly off the root of C:. Click Browse to select
a different folder or enter the path name in the box.
Network installations
Policy defaults on a domain based network may block the use
of .hlp files (over the local network).The administrator has to
modify domain policy (it will then apply to all users).
The main problems with VISTA and Windows 7 seem to be
related to permissions and specifically the need to be
‘trusted installer’ to change the properties of system files.